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Chen Y, Zheng Y, Wang J, Zhao X, Liu G, Lin Y, Yang Y, Wang L, Tang Z, Wang Y, Fang Y, Zhang W, Zhu X. Ultranarrow-bandgap small-molecule acceptor enables sensitive SWIR detection and dynamic upconversion imaging. SCIENCE ADVANCES 2024; 10:eadm9631. [PMID: 38838154 DOI: 10.1126/sciadv.adm9631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 05/02/2024] [Indexed: 06/07/2024]
Abstract
Short-wavelength infrared (SWIR) light detection plays a key role in modern technologies. Emerging solution-processed organic semiconductors are promising for cost-effective, flexible, and large-area SWIR organic photodiodes (OPDs). However, the spectral responsivity (R) and specific detectivity (D*) of SWIR OPDs are restricted by insufficient exciton dissociation and high noise current. In this work, we synthesized an SWIR small molecule with a spectral coverage of 0.3 to 1.3 micrometers peaking at 1100 nanometers. The photodiode, with optimized exciton dissociation, charge injection, and SWIR transmittance, achieves a record high R of 0.53 ampere per watt and D* of 1.71 × 1013 Jones at 1110 nanometers under zero bias. The D* at 1 to 1.2 micrometers surpasses that of the uncooled commercial InGaAs photodiode. Furthermore, large-area semitransparent all-organic upconversion devices integrating the SWIR photodiode realized static and dynamic SWIR-to-visible imaging, along with excellent upconversion efficiency and spatial resolution. This work provides alternative insights for developing sensitive organic SWIR detection.
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Affiliation(s)
- Yongjie Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Haidian District, Beijing, China
| | - Yingqi Zheng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Haidian District, Beijing, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Haidian District, Beijing, China
| | - Jing Wang
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, China
| | - Xuan Zhao
- Department of Physics and Applied Optics Beijing Area Major Laboratory, Center for Advanced Quantum Studies, Beijing Normal University, Beijing, China
| | - Guanhao Liu
- School of Chemical Sciences, University of Chinese Academy of Sciences, Haidian District, Beijing, China
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Yi Lin
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
| | - Yubo Yang
- Department of Physics and Applied Optics Beijing Area Major Laboratory, Center for Advanced Quantum Studies, Beijing Normal University, Beijing, China
| | - Lixiang Wang
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, China
| | - Zheng Tang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
| | - Ying Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Yanjun Fang
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, China
| | - Wenkai Zhang
- Department of Physics and Applied Optics Beijing Area Major Laboratory, Center for Advanced Quantum Studies, Beijing Normal University, Beijing, China
| | - Xiaozhang Zhu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Haidian District, Beijing, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Haidian District, Beijing, China
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2
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He Z, Zhang HY, Du X, Yu X, Han J, Cao L, Lin H, Wang J, Zheng C, Tao S. A high-performance dual-functional organic upconversion device with detectivity approaching 10 13 Jones and photon-to-photon efficiency over 20. MATERIALS HORIZONS 2023; 10:5950-5961. [PMID: 37882244 DOI: 10.1039/d3mh01337e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
Organic upconversion devices (UCDs) are a cutting-edge technology and hot topic because of their advantages of low cost and convenience in the important applications of near-infrared (NIR) detection and imaging. However, to realize utilization of triplet excitons (T1), previous UCDs have the drawback of heavily relying on toxic and costly heavy-metal-doped emitters. More importantly, due to poor performance of the detecting unit and/or emitting unit, improving their detectivity (D*) and photon-to-photon conversion efficiency (ηp-p) is still a challenge for real applications. Here, we report a high-performance dual-functional purely organic UCD that has an outstanding D* approaching 1013 Jones and a high ηp-p of 20.1% in the NIR region, which are some of the highest values among those reported for UCDs. The high performance is credited to the excellent D* of the detecting unit, exceeding 1014 Jones, and is also attributed to efficient T1 utilization via a dual reverse intersystem crossing channel and high optical out coupling achieved via a high horizontal dipole ratio in the emitting unit. The high D* and ηp-p enable the UCD to detect 850 nm light at as little as 0.29 μW cm-2 and with a high display contrast of over 70 000 : 1, significantly improving the potential of practical applications of UCDs in NIR detection and imaging. Furthermore, a fast rise time and fall time of 8.9 and 14.8 μs are also achieved. Benefiting from the high performance, consequent applications of low-power pulse-state monitoring and fine-structure bio-imaging are successfully realized with high quality results by using our organic UCDs. These results demonstrate that our design not only eliminates dependence of UCDs on heavy-metal emitters, but also takes their performance and applications to a high level.
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Affiliation(s)
- Zeyu He
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Ave, West Hi-Tech Zone, Chengdu 610054, P. R. China.
| | - Heng-Yuan Zhang
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Ave, West Hi-Tech Zone, Chengdu 610054, P. R. China.
| | - Xiaoyang Du
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Ave, West Hi-Tech Zone, Chengdu 610054, P. R. China.
| | - Xin Yu
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Ave, West Hi-Tech Zone, Chengdu 610054, P. R. China.
| | - Jiayue Han
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Ave, West Hi-Tech Zone, Chengdu 610054, P. R. China.
- State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Luye Cao
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Ave, West Hi-Tech Zone, Chengdu 610054, P. R. China.
| | - Hui Lin
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Ave, West Hi-Tech Zone, Chengdu 610054, P. R. China.
| | - Jun Wang
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Ave, West Hi-Tech Zone, Chengdu 610054, P. R. China.
- State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Caijun Zheng
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Ave, West Hi-Tech Zone, Chengdu 610054, P. R. China.
| | - Silu Tao
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Ave, West Hi-Tech Zone, Chengdu 610054, P. R. China.
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3
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Shih C, Lin C, Chen K, Amin NRA, Luo D, Hsu I, Akbar AK, Biring S, Lu C, Chen B, Yang S, Lee J, Liu S. Semi-Transparent, Pixel-Free Upconversion Goggles with Dual Audio-Visual Communication. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2302631. [PMID: 37737620 PMCID: PMC10625064 DOI: 10.1002/advs.202302631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 07/02/2023] [Indexed: 09/23/2023]
Abstract
The intractable brittleness and opacity of the crystalline semiconductor restrict the prospect of developing low-cost imaging systems. Here, infrared visualization technologies are established with large-area, semi-transparent organic upconversion devices that bring high-resolution invisible images into sight without photolithography. To exploit all photoinduced charge carriers, a monolithic device structure is proposed built on the infrared-selective, single-component charge generation layer of chloroaluminum phthalocyanine (ClAlPc) coupled to two visible light-emitting layers manipulated with unipolar charges. Transient pump-probe spectroscopy reveals that the ClAlPc-based device exhibits an efficient charge dissociation process under forward bias. This process is indicated by the prompt and strong features of electroabsorption screening. Furthermore, by imposing the electric field, the ultrafast excited state dynamic suggests a prolonged charge carrier lifetime from the ClAlPc, which facilitates the charge utilization for upconversion luminance. For the first time, >30% of the infrared photons are utilized without photomultiplication strategies owing to the trivial spectrum overlap between ClAlPc and the emitter. In addition, the device can broadcast the acoustic signal by synchronizing the device frequency with the light source, which enables to operate it in dual audio-visual mode. The work demonstrates the potential of upconversion devices for affordable infrared imaging in wearable electronics.
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Affiliation(s)
- Chun‐Jen Shih
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical EngineeringNational Taiwan UniversityTaipei10617Taiwan
- Organic Electronics Research Center and Department of Electronic EngineeringMing Chi University of TechnologyNew Taipei City24301Taiwan
| | - Chao‐Yang Lin
- Robinson Research Institute, Faculty of EngineeringVictoria University of WellingtonWellington6012New Zealand
| | - Kai Chen
- Robinson Research Institute, Faculty of EngineeringVictoria University of WellingtonWellington6012New Zealand
- MacDiarmid Institute for Advanced Materials and NanotechnologyWellington6012New Zealand
- The Dodd‐Walls Centre for Photonic and Quantum TechnologiesDunedin9016New Zealand
| | - Nurul Ridho Al Amin
- Organic Electronics Research Center and Department of Electronic EngineeringMing Chi University of TechnologyNew Taipei City24301Taiwan
| | - Dian Luo
- Organic Electronics Research Center and Department of Electronic EngineeringMing Chi University of TechnologyNew Taipei City24301Taiwan
| | - I‐Sheng Hsu
- Organic Electronics Research Center and Department of Electronic EngineeringMing Chi University of TechnologyNew Taipei City24301Taiwan
| | - Abdul Khalik Akbar
- Organic Electronics Research Center and Department of Electronic EngineeringMing Chi University of TechnologyNew Taipei City24301Taiwan
| | - Sajal Biring
- Organic Electronics Research Center and Department of Electronic EngineeringMing Chi University of TechnologyNew Taipei City24301Taiwan
| | - Chih‐Hsuan Lu
- Institute of Photonics TechnologiesNational Tsing Hua UniversityHsinchu300044Taiwan
| | - Bo‐Han Chen
- Institute of Photonics TechnologiesNational Tsing Hua UniversityHsinchu300044Taiwan
| | - Shang‐Da Yang
- Institute of Photonics TechnologiesNational Tsing Hua UniversityHsinchu300044Taiwan
| | - Jiun‐Haw Lee
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical EngineeringNational Taiwan UniversityTaipei10617Taiwan
| | - Shun‐Wei Liu
- Organic Electronics Research Center and Department of Electronic EngineeringMing Chi University of TechnologyNew Taipei City24301Taiwan
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Li L, Cao Y, Cui H, Li G, Li Y, Zhang Y, Zhang J, Chen B. Improving upconversion luminescence intensity of BiTa 7O 19:Er 3+/Yb 3+ by polyvalent Sb co-doping. Dalton Trans 2023. [PMID: 37317782 DOI: 10.1039/d3dt01075a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
BiTa7O19:Er3+/Yb3+/Sb phosphors were successfully synthesized by high temperature solid sintering. X-ray diffraction (XRD), fluorescence spectrometry and X-ray photoelectron spectroscopy (XPS), were used to analyze the phase structure, upconversion luminescence (UCL) features and Sb valence state, respectively. The results suggest that polyvalent Sb with Sb3+ and Sb5+ can replace the Ta5+ sites in a BiTa7O19 host to form a pure phase. Compared with BiTa7O19:0.1Er3+/0.4Yb3+, polyvalent Sb doping further improves UCL intensity by 1.2 times under 980 nm laser stimulation with a powder density of 44.59 W cm-2. This is due to the adjustment of the local lattice structure of BiTa7O19 by the polyvalent Sb. The maximum absolute sensitivity (SA) and relative sensitivity (SR) can be estimated from the UCL variable-temperature spectra as 0.0098 K-1 at 356 K and 0.0078 K-1 at 303 K using the luminescence intensity ratio (LIR) approach. The outcomes show that host local lattice adjustment using polyvalent elements is an effective way to improve luminescence intensity, and it is possible to use BiTa7O19:Er3+/Yb3+/Sb as a temperature sensor.
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Affiliation(s)
- Lei Li
- Department of Physics, Dalian Maritime University, Dalian, 116026, China.
| | - Yongze Cao
- Department of Physics, Dalian Maritime University, Dalian, 116026, China.
| | - Hongqiang Cui
- Department of Physics, Dalian Maritime University, Dalian, 116026, China.
| | - Guojian Li
- Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang 110819, China
| | - Ying Li
- Navigation College, Dalian Maritime University, Dalian, 116026, China
| | - Yuhang Zhang
- Department of Physics, Dalian Maritime University, Dalian, 116026, China.
| | - Jinsu Zhang
- Department of Physics, Dalian Maritime University, Dalian, 116026, China.
| | - Baojiu Chen
- Department of Physics, Dalian Maritime University, Dalian, 116026, China.
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Shih CJ, Huang YC, Wang TY, Yu CW, Hsu IS, Akbar AK, Lin JY, Biring S, Lee JH, Liu SW. Transparent organic upconversion devices displaying high-resolution, single-pixel, low-power infrared images perceived by human vision. SCIENCE ADVANCES 2023; 9:eadd7526. [PMID: 37126555 PMCID: PMC10132748 DOI: 10.1126/sciadv.add7526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 03/23/2023] [Indexed: 05/03/2023]
Abstract
Crystalline photodiodes remain the most viable infrared sensing technology of choice, yet the opacity and the limitation in pixel size reduction per se restrict their development for supporting high-resolution in situ infrared images. In this work, we propose an all-organic non-fullerene-based upconversion device that brings invisible infrared signal into human vision via exciplex cohost light-emissive system. The device reaches an infrared-to-visible upconversion efficiency of 12.56% by resolving the 940-nm infrared signal (power density of 103.8 μW cm-2). We tailor a semitransparent (AVT, ~60%), large-area (10.35 cm2), lightweight (22.91 g), single-pixel upconversion panel to visualize the infrared power density down to 0.75 μW cm2, inferring a bias-switching linear dynamic range approaching 80 dB. We also demonstrate the possibility of visualizing low-intensity infrared signals from the Face ID and LiDAR, which should fill the gap in the existing technology based on pixelated complementary metal-oxide semiconductors with optical lenses.
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Affiliation(s)
- Chun-Jen Shih
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Organic Electronics Research Center and Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Yu-Ching Huang
- Organic Electronics Research Center and Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Tai-Yung Wang
- Organic Electronics Research Center and Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Chang-Wei Yu
- Organic Electronics Research Center and Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - I-Sheng Hsu
- Organic Electronics Research Center and Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Abdul Khalik Akbar
- Organic Electronics Research Center and Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Jai-Yi Lin
- Organic Electronics Research Center and Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Sajal Biring
- Organic Electronics Research Center and Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Jiun-Haw Lee
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Shun-Wei Liu
- Organic Electronics Research Center and Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
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Shan T, Hou X, Yin X, Guo X. Organic photodiodes: device engineering and applications. FRONTIERS OF OPTOELECTRONICS 2022; 15:49. [PMID: 36637681 PMCID: PMC9763529 DOI: 10.1007/s12200-022-00049-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 08/09/2022] [Indexed: 06/17/2023]
Abstract
Organic photodiodes (OPDs) have shown great promise for potential applications in optical imaging, sensing, and communication due to their wide-range tunable photoelectrical properties, low-temperature facile processes, and excellent mechanical flexibility. Extensive research work has been carried out on exploring materials, device structures, physical mechanisms, and processing approaches to improve the performance of OPDs to the level of their inorganic counterparts. In addition, various system prototypes have been built based on the exhibited and attractive features of OPDs. It is vital to link the device optimal design and engineering to the system requirements and examine the existing deficiencies of OPDs towards practical applications, so this review starts from discussions on the required key performance metrics for different envisioned applications. Then the fundamentals of the OPD device structures and operation mechanisms are briefly introduced, and the latest development of OPDs for improving the key performance merits is reviewed. Finally, the trials of OPDs for various applications including wearable medical diagnostics, optical imagers, spectrometers, and light communications are reviewed, and both the promises and challenges are revealed.
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Affiliation(s)
- Tong Shan
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xiao Hou
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xiaokuan Yin
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xiaojun Guo
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
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Zhang H, Zhang J, Peng X, Li Z, Bai W, Wang T, Gu Z, Li Y. Smart Internal Bio-Glues. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2203587. [PMID: 35901498 PMCID: PMC9507370 DOI: 10.1002/advs.202203587] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Indexed: 05/25/2023]
Abstract
Although smart bio-glues have been well documented, the development of internal bio-glues for non-invasive or minimally invasive surgery is still met with profound challenges such as safety risk and the lack of deep tissue penetration stimuli for internal usage. Herein, a series of smart internal bio-glues are developed via the integration of o-nitrobenzene modified biopolymers with up-conversion nanoparticles (UCNPs). Upon irradiation by near-infrared (NIR) light, the prepared smart bio-glues can undergo a gelation process, which may further induce strong adhesion between tissues under both dry and wet conditions based on multi-interactions. Moreover, those NIR light-responsive bio-glues with deeper tissue penetration ability demonstrate good biocompatibility, excellent hemostatic performance, and the potent ability to accelerate wound healing for both external and internal wounds. This work provides new opportunities for minimally invasive surgery, especially in internal wound healing using smart and robust bio-glues.
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Affiliation(s)
- Hengjie Zhang
- College of Polymer Science and EngineeringState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065China
| | - Jianhua Zhang
- College of Polymer Science and EngineeringState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065China
| | - Xu Peng
- Experimental and Research Animal InstituteSichuan UniversityChengdu610041China
| | - Zhan Li
- College of Polymer Science and EngineeringState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065China
| | - Wanjie Bai
- College of Polymer Science and EngineeringState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065China
| | - Tianyou Wang
- College of Polymer Science and EngineeringState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065China
| | - Zhipeng Gu
- College of Polymer Science and EngineeringState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065China
| | - Yiwen Li
- College of Polymer Science and EngineeringState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065China
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Zhang Y, He Z, Du X, Han J, Lin H, Zheng C, Wang J, Yang G, Tao S. High-performance organic upconversion device with 12% photon to photon conversion efficiency at 980 nm and bio-imaging application in near-infrared region. OPTICS EXPRESS 2022; 30:16644-16654. [PMID: 36221502 DOI: 10.1364/oe.454655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 04/12/2022] [Indexed: 06/16/2023]
Abstract
We demonstrated an organic upconversion device (UCD) successfully converted input NIR light (850-1310 nm) into 524 nm green emission. The UCD under 980 nm light irradiation exhibits a high photon to photon conversion efficiency of 12%. In addition, the linear dynamic range reaches 72.1 dB and the maximum on/off ratio of luminance reaches 4.4×104, which guarantee the clarity of imaging from 850 to 1310 nm. The UCD in this work has the characteristics of high efficiency and long wavelengths detection, and it makes some senses for long wavelengths NIR bio-imaging in further researches.
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