1
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Zhang Y, Yoo JI, Kim HB, Kim KH, Kang SC, Choi EY, Parani S, Song JK. Photoluminescence enhancement in quantum-dot-polymer films with CO 2 micropores through KHCO 3 decomposition. J Colloid Interface Sci 2023; 649:132-139. [PMID: 37348332 DOI: 10.1016/j.jcis.2023.06.093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 06/02/2023] [Accepted: 06/14/2023] [Indexed: 06/24/2023]
Abstract
Quantum-dot (QDs) polymer composite films, which are key components in recent display applications, require improved photoluminescence (PL) intensity and color conversion efficiency for better display quality and low power consumption. In this study, we developed a novel approach to improve the photoluminescence (PL) of quantum dot (QDs)-polymer nanocomposite films. This was achieved by incorporating CO2 micropores and scattering particles into QD-embedded photopolymerizable polymer films. CO2 micropores were generated by the decomposition of KHCO3 in the film. The CO2 micropores, along with the partially decomposed KHCO3 microparticles, act as a scattering medium that increases the photon absorbance and improves the PL intensity. The effect of KHCO3 annealing temperature on various optical properties is investigated, and it is found that a large number of uniform micropores are created in the film at an optimal temperature, 110 ℃. Compared to an ordinary QD-polymer film, the PL of the QD-hybrid-foamed polymer film increases by 4.2 times. This method is fast and economically efficient, and provides insights into the design of high-performance optoelectronic devices.
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Affiliation(s)
- Yi Zhang
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Jangan-Gu, Suwon, Gyeonggi-do 16419, South Korea
| | - Jae-In Yoo
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Jangan-Gu, Suwon, Gyeonggi-do 16419, South Korea
| | - Hyo-Bin Kim
- Department of Display Convergence Engineering, Sungkyunkwan University, Jangan-Gu, Suwon, Gyeonggi-do 16419, South Korea
| | - Kang-Hoon Kim
- Department of Semicconductor and Display Engineering, Sungkyunkwan University, Jangan-Gu, Suwon, Gyeonggi-do 16419, South Korea
| | - Sung-Cheon Kang
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Jangan-Gu, Suwon, Gyeonggi-do 16419, South Korea
| | - Eun-Young Choi
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Jangan-Gu, Suwon, Gyeonggi-do 16419, South Korea
| | - Sundararajan Parani
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Jangan-Gu, Suwon, Gyeonggi-do 16419, South Korea.
| | - Jang-Kun Song
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Jangan-Gu, Suwon, Gyeonggi-do 16419, South Korea; Department of Display Convergence Engineering, Sungkyunkwan University, Jangan-Gu, Suwon, Gyeonggi-do 16419, South Korea.
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2
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Jain K, Venkatapathi M. Radiative decay of an emitter due to non-Markovian interactions with dissipating matter. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:265302. [PMID: 35417897 DOI: 10.1088/1361-648x/ac671f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 04/13/2022] [Indexed: 06/14/2023]
Abstract
It is known that the more tractable Markovian models of coupling suited for weak interactions may overestimate the Rabi frequency notably when applied to the strong-coupling regime. Here, a more significant consequence of the non-Markovian interaction between a photon emitter and dissipating matter such as resonant plasmonic nanoparticles is described. A large increase of radiative decay and a diminished non-radiative loss is shown, which unravels the origin of unexpected large enhancements of surface-enhanced-Raman-spectroscopy, as well as the anomalous enhancements of emission due to extremely small fully absorbing metal nanoparticles less than 10 nm in dimensions. We construct the mixture of pure states of the coupled emitter-nanoparticle system, unlike conventional methods that rely on the orthogonal modes of the nanoparticle alone.
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Affiliation(s)
- Kritika Jain
- Computational and Statistical Physics Laboratory, Indian Institute of Science, Bangalore, India 560012
| | - Murugesan Venkatapathi
- Computational and Statistical Physics Laboratory, Indian Institute of Science, Bangalore, India 560012
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3
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Muravitskaya A, Movsesyan A, Guzatov DV, Baudrion AL, Adam PM, Gaponenko SV, Vincent R. Engineering of the Photon Local Density of States: Strong Inhibition of Spontaneous Emission near the Resonant and High-Refractive Index Dielectric Nano-objects. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2022; 126:5691-5700. [PMID: 35694697 PMCID: PMC9173691 DOI: 10.1021/acs.jpcc.1c09844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 03/01/2022] [Indexed: 06/15/2023]
Abstract
Metallic or dielectric nano-objects change the photon local density of states of closely placed emitters, particularly when plasmon or Mie resonances are present. Depending on the shape and material of these nano-objects, they may induce either a decrease or an increase in decay rates of the excited states of the emitter. In this work, we consider the reduction of the probability of optical transitions in emitters near high-refractive index dielectric (silicon and zinc selenide) nanoparticles. We tune the spectral positions of magnetic and electric modes of nanocylinders to obtain the largest overlap of the valleys in the total decay rate spectra for differently oriented dipoles and, in this way, find the highest inhibition of about 80% for randomly oriented emitters. The spectral positions of these valleys are easy to control since the wavelengths of the modes depend on the height and diameter of nanocylinders. The inhibition value is robust to the distance between the emitter and the nanoparticle in the range of nearly 50 nm, which is crucially important for the applications, such as selective optical transition engineering and photovoltaics.
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Affiliation(s)
- Alina Muravitskaya
- B.I.
Stepanov Institute of Physics, National
Academy of Sciences of Belarus, 68 Nezavisimosti Avenue, Minsk 220072, Belarus
| | - Artur Movsesyan
- Light,
Nanomaterials & Nanotechnologies (L2n), CNRS EMR 7004, Université
de Technologie de Troyes, 12 Rue Marie Curie, Troyes Cedex 10004, France
| | - Dmitry V. Guzatov
- Yanka
Kupala State University of Grodno, str. Ozheshko 22, Grodno 230023, Belarus
| | - Anne-Laure Baudrion
- Light,
Nanomaterials & Nanotechnologies (L2n), CNRS EMR 7004, Université
de Technologie de Troyes, 12 Rue Marie Curie, Troyes Cedex 10004, France
| | - Pierre-Michel Adam
- Light,
Nanomaterials & Nanotechnologies (L2n), CNRS EMR 7004, Université
de Technologie de Troyes, 12 Rue Marie Curie, Troyes Cedex 10004, France
| | - Sergey V. Gaponenko
- B.I.
Stepanov Institute of Physics, National
Academy of Sciences of Belarus, 68 Nezavisimosti Avenue, Minsk 220072, Belarus
| | - Remi Vincent
- Light,
Nanomaterials & Nanotechnologies (L2n), CNRS EMR 7004, Université
de Technologie de Troyes, 12 Rue Marie Curie, Troyes Cedex 10004, France
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4
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Yang S, Chen PY, Ni CC, Chen JC, Li ZH, Kuo Y, Yang CC, Hsu TC, Lee CL. Enhancement of the Modulation Response of Quantum-Dot-Based Down-Converted Light through Surface Plasmon Coupling. Molecules 2022; 27:molecules27061957. [PMID: 35335322 PMCID: PMC8951563 DOI: 10.3390/molecules27061957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 03/13/2022] [Accepted: 03/14/2022] [Indexed: 11/16/2022] Open
Abstract
In this paper, we first elaborate on the effects of surface plasmon (SP) coupling on the modulation responses of the emission of a light-emitting diode (LED) and its down-converted lights through colloidal quantum dots (QDs). The results of our past efforts for this subject are briefly discussed. The discussions lay the foundation for the presentation of the new experimental data of such down-converted lights in this paper. In particular, the enhancement of the modulation bandwidth (MB) of a QD-based converted light through SP coupling is demonstrated. By linking green-emitting QDs (GQDs) and/or red-emitting QDs (RQDs) with synthesized Ag nano-plates via surface modifications and placing them on a blue-emitting LED, the MBs of the converted green and red emissions are significantly increased through the induced SP coupling of the Ag nano-plates. When both GQD and RQD exist and are closely spaced in a sample, the energy transfer processes of emission-reabsorption and Förster resonance energy transfer from GQD into RQD occur, leading to the increase (decrease) in the MB of green (red) light. With SP coupling, the MB of a mixed light is significantly enhanced.
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Affiliation(s)
- Shaobo Yang
- Institute of Photonics and Optoelectronics, Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan; (S.Y.); (P.-Y.C.); (C.-C.N.); (J.-C.C.); (Z.-H.L.)
| | - Po-Yu Chen
- Institute of Photonics and Optoelectronics, Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan; (S.Y.); (P.-Y.C.); (C.-C.N.); (J.-C.C.); (Z.-H.L.)
| | - Chia-Chun Ni
- Institute of Photonics and Optoelectronics, Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan; (S.Y.); (P.-Y.C.); (C.-C.N.); (J.-C.C.); (Z.-H.L.)
| | - Jun-Chen Chen
- Institute of Photonics and Optoelectronics, Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan; (S.Y.); (P.-Y.C.); (C.-C.N.); (J.-C.C.); (Z.-H.L.)
| | - Zong-Han Li
- Institute of Photonics and Optoelectronics, Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan; (S.Y.); (P.-Y.C.); (C.-C.N.); (J.-C.C.); (Z.-H.L.)
| | - Yang Kuo
- Department of Energy and Refrigerating Air-Conditioning Engineering, Tungnan University, 152 Beishen Road, Section 3, New Taipei City 22202, Taiwan;
| | - Chih-Chung Yang
- Institute of Photonics and Optoelectronics, Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan; (S.Y.); (P.-Y.C.); (C.-C.N.); (J.-C.C.); (Z.-H.L.)
- Correspondence:
| | - Ta-Cheng Hsu
- Unikorn Semiconductor Corp., No. 5, Li-hsin 5th Rd., Hsinchu Science Park, Hsinchu 30078, Taiwan;
| | - Chi-Ling Lee
- Epistar Corp., No. 5, Li-hsin 5th Rd., Hsinchu Science Park, Hsinchu 30078, Taiwan;
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Kim SK, Lee SH, Yoon SY, Jo DY, Kim HM, Kim Y, Park SM, Kim YH, Yang H. Localized surface plasmon-enhanced blue electroluminescent device based on ZnSeTe quantum dots and AuAg nanoparticles. Inorg Chem Front 2022. [DOI: 10.1039/d2qi00448h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Localized surface plasmon resonance-enhanced Cd-free blue electroluminescent devices integrated with ZnSeTe quantum dots and AuAg alloy nanoparticles were demonstrated.
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Affiliation(s)
- Sun-Kyo Kim
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Korea
| | - Sun-Hyoung Lee
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Korea
| | - Suk-Young Yoon
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Korea
| | - Dae-Yeon Jo
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Korea
| | - Hyun-Min Kim
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Korea
| | - Yuri Kim
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Korea
| | - Seong Min Park
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Korea
| | - Yang-Hee Kim
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Korea
| | - Heesun Yang
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Korea
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6
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Derikov YI, Shandryuk GA, Talroze RV. Block Copolymers of Styrene with 4-Vinylpyridine and Acrylic Acid as Stabilizing Ligands of CdSe/ZnS Quantum Dots. POLYMER SCIENCE SERIES B 2021. [DOI: 10.1134/s1560090421060075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Chen M, Lu L, Yu H, Li C, Zhao N. Integration of Colloidal Quantum Dots with Photonic Structures for Optoelectronic and Optical Devices. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2101560. [PMID: 34319002 PMCID: PMC8456226 DOI: 10.1002/advs.202101560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/23/2021] [Indexed: 05/05/2023]
Abstract
Colloidal quantum dot (QD), a solution-processable nanoscale optoelectronic building block with well-controlled light absorption and emission properties, has emerged as a promising material system capable of interacting with various photonic structures. Integrated QD/photonic structures have been successfully realized in many optical and optoelectronic devices, enabling enhanced performance and/or new functionalities. In this review, the recent advances in this research area are summarized. In particular, the use of four typical photonic structures, namely, diffraction gratings, resonance cavities, plasmonic structures, and photonic crystals, in modulating the light absorption (e.g., for solar cells and photodetectors) or light emission (e.g., for color converters, lasers, and light emitting diodes) properties of QD-based devices is discussed. A brief overview of QD-based passive devices for on-chip photonic circuit integration is also presented to provide a holistic view on future opportunities for QD/photonic structure-integrated optoelectronic systems.
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Affiliation(s)
- Mengyu Chen
- School of Electronic Science and EngineeringXiamen UniversityXiamen361005P. R. China
- Department of Electronic EngineeringThe Chinese University of Hong KongShatinNew TerritoriesHong Kong SARChina
| | - Lihua Lu
- School of Electronic Science and EngineeringXiamen UniversityXiamen361005P. R. China
| | - Hui Yu
- Department of Electronic EngineeringThe Chinese University of Hong KongShatinNew TerritoriesHong Kong SARChina
| | - Cheng Li
- School of Electronic Science and EngineeringXiamen UniversityXiamen361005P. R. China
- Future DisplayInstitute of XiamenXiamen361005P. R. China
| | - Ni Zhao
- Department of Electronic EngineeringThe Chinese University of Hong KongShatinNew TerritoriesHong Kong SARChina
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8
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Hui W, Ping T, Yin J, Li J, Li J, Kang J. Dual-Mode Plasmonic Coupling-Enhanced Color Conversion of Inorganic CsPbBr 3 Perovskite Quantum Dot Films. ACS APPLIED MATERIALS & INTERFACES 2021; 13:32856-32864. [PMID: 34251164 DOI: 10.1021/acsami.1c02801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Plasmonic coupling has been demonstrated to be an effective manipulation strategy for emission enhancement in low-dimensional semiconductor materials. Here, dual-mode plasmonic resonances based on a metal dimer structure were proposed to simultaneously enhance the absorption under short-wavelength excitation and excitons' emission at longer wavelengths for CsPbBr3 perovskite quantum dots (QDs). Large-area metal nanodimer arrays with well-controlled local surface plasmon resonance were facilely fabricated by a simple method combined with metal angular deposition and nanosphere lithography. With the addition of an optimized polymethyl methacrylate spacer, the effective plasmonic coupling and interfacial passivation of QDs were successfully achieved in the hybrid system. As a result, the QD films exhibited a significant and approximately 3.95-fold overall fluorescence enhancement when using blue light excitation, showing the novel advantages of dual-mode plasmonic coupling of semiconductor quantum structures for color conversion applications.
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Affiliation(s)
- Wenjie Hui
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Jiujiang Research Institute, Department of Physics / Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, Fujian 361005, China
| | - Tan Ping
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Jiujiang Research Institute, Department of Physics / Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, Fujian 361005, China
| | - Jun Yin
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Jiujiang Research Institute, Department of Physics / Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, Fujian 361005, China
| | - Jinchai Li
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Jiujiang Research Institute, Department of Physics / Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, Fujian 361005, China
| | - Jing Li
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Jiujiang Research Institute, Department of Physics / Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, Fujian 361005, China
| | - Junyong Kang
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Jiujiang Research Institute, Department of Physics / Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, Fujian 361005, China
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Wu Y, Ma J, Su P, Zhang L, Xia B. Full-Color Realization of Micro-LED Displays. NANOMATERIALS 2020; 10:nano10122482. [PMID: 33322057 PMCID: PMC7764662 DOI: 10.3390/nano10122482] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 11/23/2020] [Accepted: 12/07/2020] [Indexed: 12/27/2022]
Abstract
Emerging technologies, such as smart wearable devices, augmented reality (AR)/virtual reality (VR) displays, and naked-eye 3D projection, have gradually entered our lives, accompanied by an urgent market demand for high-end display technologies. Ultra-high-resolution displays, flexible displays, and transparent displays are all important types of future display technology, and traditional display technology cannot meet the relevant requirements. Micro-light-emitting diodes (micro-LEDs), which have the advantages of a high contrast, a short response time, a wide color gamut, low power consumption, and a long life, are expected to replace traditional liquid-crystal displays (LCD) and organic light-emitting diodes (OLED) screens and become the leaders in the next generation of display technology. However, there are two major obstacles to moving micro-LEDs from the laboratory to the commercial market. One is improving the yield rate and reducing the cost of the mass transfer of micro-LEDs, and the other is realizing a full-color display using micro-LED chips. This review will outline the three main methods for applying current micro-LED full-color displays, red, green, and blue (RGB) three-color micro-LED transfer technology, color conversion technology, and single-chip multi-color growth technology, to summarize present-day micro-LED full-color display technologies and help guide the follow-up research.
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10
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Kang JH, Li B, Zhao T, Johar MA, Lin CC, Fang YH, Kuo WH, Liang KL, Hu S, Ryu SW, Han J. RGB Arrays for Micro-Light-Emitting Diode Applications Using Nanoporous GaN Embedded with Quantum Dots. ACS APPLIED MATERIALS & INTERFACES 2020; 12:30890-30895. [PMID: 32519834 DOI: 10.1021/acsami.0c00839] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The multiple light scattering of nanoporous (NP) GaN was systematically studied and applied to the color down-conversion for micro-light-emitting diode (LED) display applications. The transport mean free path (TMFP) in NP GaN is 660 nm at 450 nm (light wavelength), and it decreases with a decreasing wavelength. It was observed that the short TMFP of the NP GaN increased the light extinction coefficient at 370 nm by 11 times. Colloidal QDs were loaded into a half 4″ wafer scale NP GaN, and 96 and 100% of light conversion efficiencies for green and red were achieved, respectively. By loading green and red QDs selectively into NP GaN mesas, we demonstrated the RGB microarrays based on the blue-violet pumping light with green and red color converting regions.
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Affiliation(s)
- Jin-Ho Kang
- Department of Electrical Engineering, Yale University, New Haven, Connecticut 06520, United States
| | - Bingjun Li
- Department of Electrical Engineering, Yale University, New Haven, Connecticut 06520, United States
| | - Tianshuo Zhao
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States
- Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, United States
| | - Muhammad Ali Johar
- Department of Physics, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Chien-Chung Lin
- Electronic and Optoelectronic System Research Laboratories, Industrial Technology Research Institute ITRI, Hsinchu 31057, Taiwan
| | - Yen-Hsiang Fang
- Electronic and Optoelectronic System Research Laboratories, Industrial Technology Research Institute ITRI, Hsinchu 31057, Taiwan
| | - Wei-Hung Kuo
- Electronic and Optoelectronic System Research Laboratories, Industrial Technology Research Institute ITRI, Hsinchu 31057, Taiwan
| | - Kai-Ling Liang
- Electronic and Optoelectronic System Research Laboratories, Industrial Technology Research Institute ITRI, Hsinchu 31057, Taiwan
| | - Shu Hu
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States
- Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, United States
| | - Sang-Wan Ryu
- Department of Physics, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Jung Han
- Department of Electrical Engineering, Yale University, New Haven, Connecticut 06520, United States
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11
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Xuan T, Shi S, Wang L, Kuo HC, Xie RJ. Inkjet-Printed Quantum Dot Color Conversion Films for High-Resolution and Full-Color Micro Light-Emitting Diode Displays. J Phys Chem Lett 2020; 11:5184-5191. [PMID: 32531168 DOI: 10.1021/acs.jpclett.0c01451] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Micro light-emitting diodes (μLEDs) have been considered an excellent candidate for next-generation display technology because of their promising optical properties, outstanding power efficiency, fast response time, high reliability, etc. However, the μLED displays based on individual red-green-blue (RGB) primary chips suffer from severe issues in mass production, such as difficulty in mass transfer, high cost, and low reproducibility. To overcome these issues, an alternative approach has been proposed to achieve full-color μLEDs by assembling ultraviolet- or blue-μLEDs with QD color conversion films (CCFs). In this Perspective, we give a general introduction of QD-based μLEDs and provide an overview of the preparation of fine patterned QD CCFs by inkjet printing. We then discuss advances in II-VI core/shell QD-based μLEDs. This is followed by representative progress on preliminary exploration of lead halide perovskite QD CCFs, which have great potential for use in high-resolution and full-color μLEDs displays. Finally, we address the remaining challenges for further improvement of QD-based μLEDs.
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Affiliation(s)
- Tongtong Xuan
- College of Materials, Xiamen University, Xiamen 361005, China
- Shenzhen Research Institute of Xiamen University, Shenzhen 518000, China
| | - Shuchen Shi
- College of Materials, Xiamen University, Xiamen 361005, China
- Shenzhen Research Institute of Xiamen University, Shenzhen 518000, China
| | - Le Wang
- College of Optical and Electronic Technology, China Jiliang University, Hangzhou, Zhejiang 310018, China
| | - Hao-Chung Kuo
- Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Rong-Jun Xie
- College of Materials, Xiamen University, Xiamen 361005, China
- Shenzhen Research Institute of Xiamen University, Shenzhen 518000, China
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12
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Hu X, Xie Y, Geng C, Xu S, Bi W. Study on the Color Compensation Effect of Composite Orange-Red Quantum Dots in WLED Application. NANOSCALE RESEARCH LETTERS 2020; 15:118. [PMID: 32449132 PMCID: PMC7246285 DOI: 10.1186/s11671-020-03350-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 05/11/2020] [Indexed: 05/09/2023]
Abstract
Quantum dots (QDs) as emerging light-converting materials show the advantage of enhancing color quality of white light-emitting diode (WLED). However, WLEDs employing narrow-emitting monochromic QDs usually present unsatisfactory color rendering in the orange region. Herein, composite orange-red QDs (composite-QDs) are developed through mixing CdSe/ZnS-based orange QDs (O-QDs) and red QDs (R-QDs) to compensate the orange-red light for WLEDs. We investigated the effect of self-absorption and fluorescence resonance energy transfer (FRET) process in composite-QDs on the spectral controllability and fluorescent quenching in WLEDs. The concentration and donor/acceptor ratios were also taken into account to analyze the FRET efficiency and help identify suitable composite-QDs for color compensation in the orange-red light region. As the result, the optimized composite-QDs effectively improve the color rendering index of the WLED compared with monochromatic QDs.
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Affiliation(s)
- Xiaoyue Hu
- Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin, 300401, People's Republic of China
| | - Yangyang Xie
- Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin, 300401, People's Republic of China
| | - Chong Geng
- Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin, 300401, People's Republic of China
| | - Shu Xu
- Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin, 300401, People's Republic of China.
| | - Wengang Bi
- Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin, 300401, People's Republic of China.
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13
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Kang JH, Han J. 65‐2:
Invited Paper:
Enabling Technology for MicroLED Display Based on Quantum Dot Color Converter. ACTA ACUST UNITED AC 2019. [DOI: 10.1002/sdtp.13073] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jin-Ho Kang
- Department of Electrical Engineering Yale University New Haven CT United States
| | - Jung Han
- Department of Electrical Engineering Yale University New Haven CT United States
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Bai X, Purcell-Milton F, Gun'ko YK. Optical Properties, Synthesis, and Potential Applications of Cu-Based Ternary or Quaternary Anisotropic Quantum Dots, Polytypic Nanocrystals, and Core/Shell Heterostructures. NANOMATERIALS 2019; 9:nano9010085. [PMID: 30634642 PMCID: PMC6359286 DOI: 10.3390/nano9010085] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 12/28/2018] [Accepted: 12/31/2018] [Indexed: 12/29/2022]
Abstract
This review summaries the optical properties, recent progress in synthesis, and a range of applications of luminescent Cu-based ternary or quaternary quantum dots (QDs). We first present the unique optical properties of the Cu-based multicomponent QDs, regarding their emission mechanism, high photoluminescent quantum yields (PLQYs), size-dependent bandgap, composition-dependent bandgap, broad emission range, large Stokes’ shift, and long photoluminescent (PL) lifetimes. Huge progress has taken place in this area over the past years, via detailed experimenting and modelling, giving a much more complete understanding of these nanomaterials and enabling the means to control and therefore take full advantage of their important properties. We then fully explore the techniques to prepare the various types of Cu-based ternary or quaternary QDs (including anisotropic nanocrystals (NCs), polytypic NCs, and spherical, nanorod and tetrapod core/shell heterostructures) are introduced in subsequent sections. To date, various strategies have been employed to understand and control the QDs distinct and new morphologies, with the recent development of Cu-based nanorod and tetrapod structure synthesis highlighted. Next, we summarize a series of applications of these luminescent Cu-based anisotropic and core/shell heterostructures, covering luminescent solar concentrators (LSCs), bioimaging and light emitting diodes (LEDs). Finally, we provide perspectives on the overall current status, challenges, and future directions in this field. The confluence of advances in the synthesis, properties, and applications of these Cu-based QDs presents an important opportunity to a wide-range of fields and this piece gives the reader the knowledge to grasp these exciting developments.
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Affiliation(s)
- Xue Bai
- School of Chemistry and CRANN Institute, Trinity College Dublin, Dublin 2, Dublin, Ireland.
| | - Finn Purcell-Milton
- School of Chemistry and CRANN Institute, Trinity College Dublin, Dublin 2, Dublin, Ireland.
| | - Yuri K Gun'ko
- School of Chemistry and CRANN Institute, Trinity College Dublin, Dublin 2, Dublin, Ireland.
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Kwon OH, Jang JW, Park SJ, Kim JS, Hong SJ, Jung YS, Yang H, Kim YJ, Cho YS. Plasmonic-Enhanced Luminescence Characteristics of Microscale Phosphor Layers on a ZnO Nanorod-Arrayed Glass Substrate. ACS APPLIED MATERIALS & INTERFACES 2019; 11:1004-1012. [PMID: 30511826 DOI: 10.1021/acsami.8b13767] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We present a planar luminescent layer for glare-free, long-lifespan white light-emitting diodes (LEDs), with attractive light outputs. The novel and facile remote phosphor approach proposed in this work enhances luminescence properties by combining a waveguiding ZnO-based nanostructure with plasmonic Au nanoparticles. The system comprised a microscale yellow phosphor layer that is applied by simple printing onto an Au nanoparticle-dispersed ZnO nanorod array. This architecture resulted in a considerable enhancement in luminous efficacy of approximately 18% because of the combination of waveguide effects from the nanorod structure and plasmonic effects from the Au nanoparticles. Performance was optimized according to the length of the Zn nanorods and the concentration of Au. An optimal efficiency of ∼84.26 lm/W for a silicate phosphor-converted LED was achieved using long ZnO nanorods and an Au concentration of 12.5 ppm. The finite-difference time-domain method was successfully used to verify the luminous efficacy improvements in the Au nanoparticle-intervened nanostructures via the waveguiding and plasmonic effects.
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Affiliation(s)
| | | | | | - Jun Sik Kim
- R&D Center , LG Display Co., Ltd , Paju-si , Gyeonggi-do 10843 , Korea
| | | | | | - Heesun Yang
- Department of Materials Science & Engineering , Hongik University , Seoul 04006 , Korea
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Kim KS, Zakia M, Yoon J, Yoo SI. Metal-enhanced fluorescence in polymer composite films with Au@Ag@SiO 2 nanoparticles and InP@ZnS quantum dots. RSC Adv 2018; 9:224-233. [PMID: 35521603 PMCID: PMC9059362 DOI: 10.1039/c8ra08802k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 12/15/2018] [Indexed: 11/21/2022] Open
Abstract
For white light-emitting diode (LED) applications, semiconductor quantum dots (QDs) have been widely utilized as efficient down-converters to change the blue color of the light source into different emission colors. Because QDs offer spectral tunability over the entire visible light range, as well as improved color purity, they have rapidly replaced conventional phosphor-based white LEDs. However, for the sustainable growth of QD-mediated LEDs, the amount of QDs required must be reduced by enhancing the color-conversion efficiency. For this purpose, we prepared poly(lauryl methacrylate) (PLMA) composite films by the photo-crosslinking polymerization of lauryl methacrylate monomers in the presence of Au@Ag@SiO2 nanoparticles (NPs) and InP@ZnS QDs. In the PLMA composites, the Au@Ag NPs not only amplified the blue light source but also modified the relaxation of the excited QDs via localized surface plasmon resonance. This resulted in a maximum 12.9-fold enhancement in the QD fluorescence. Because the blue light source in this study can be easily replaced by blue LEDs, the enhanced efficiency of QD emissions via the plasmonic effect could potentially increase the performance of QDs for display applications.
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Affiliation(s)
- Ki-Se Kim
- Department of Chemistry, Seoul National University Seoul 08826 Republic of Korea
| | - Maulida Zakia
- Department of Polymer Engineering, Pukyong National University Busan 48547 Republic of Korea
| | - Jinhwan Yoon
- Department of Chemistry Education, Graduate Department of Chemical Materials, Pusan National University Busan 46241 Republic of Korea
| | - Seong Il Yoo
- Department of Polymer Engineering, Pukyong National University Busan 48547 Republic of Korea
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