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Influence of Electrospinning Setup Parameters on Properties of Polymer-Perovskite Nanofibers. Polymers (Basel) 2023; 15:polym15030731. [PMID: 36772031 PMCID: PMC9920078 DOI: 10.3390/polym15030731] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/28/2023] [Accepted: 01/29/2023] [Indexed: 02/04/2023] Open
Abstract
Optimizing the properties of electrospun polymer-perovskite nanofibers is considered essential for improving the performance of flexible optoelectronic devices. Here, the influence of electrospinning setup parameters (i.e., electrical voltage, collector type (planar or rotary), rotation speed, as well as process time) on the properties (i.e., external structure, perovskite crystallinity, optical properties, thermal properties, the shrinkage ratio, mechanical properties, and long-term stability) of electrospun polyvinylpyrrolidone nanofibers modified with cesium lead iodide nanocrystals has been studied. The results have shown that the structure of nanofibers is related to the electrical voltage, collector rotation speed, and process duration. Perovskite crystallinity and light absorption have improved by increasing the electrical voltage or/and the process time. The polymer's glass transition temperature is affected by the embedded perovskite and the collector's rotation speed. The shrinkage ratio and mechanical properties of nanofibers have been controlled by the rotation speed and the electrical voltage. The shrinkage is caused by the stress created in the nanofibers during the electrospinning process. The best mechanical properties can be noticed with the rotary collector at a rotational speed of 500--750 rpm. Nanofibers have shown good long-term stability and high thermal stability. The long-term stability is inversely proportional to the value of the electrical voltage.
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Sanjeev Kumar, Jain G, Kumar K, Singh BP, Dhakate SR. A Review on Polymeric Photoluminiscent Nanofibers: Inorganic, Organic and Perovskites Additives for Solid-State Lighting Application. POLYMER SCIENCE SERIES A 2022. [DOI: 10.1134/s0965545x22700213] [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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Wang Q, Li K, Yang H, Lin D, Shih WY, Shih WH. Cesium lead iodide electrospun fibrous membranes for white light-emitting diodes. NANOTECHNOLOGY 2022; 33:10.1088/1361-6528/ac77a0. [PMID: 35688069 PMCID: PMC9295438 DOI: 10.1088/1361-6528/ac77a0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 06/09/2022] [Indexed: 06/15/2023]
Abstract
Inorganic perovskite cesium lead iodide nanocrystals (CsPbI3NCs) are good candidates for optoelectronic devices because of their excellent properties of remarkable luminous performance (high luminous efficiency, narrow luminous spectral line), and high photoelectric conversion efficiency by using simple preparation method. But their inherent poor stability greatly limits its practical applications. In this paper, electrospinning is used to grow fibrous membranes with embedded cesium lead iodide perovskite nanocrystals (PNCs) formedin situin a one-step process. It was found that cubicα-CsPbI3PNCs were formed in polymer fibers, showing bright and uniform fluorescence signals. Furthermore, the water wetting angles were increased by the fibrous structure enhancing the hydrophobicity and the stability of the fibrous membranes in water. The electrospun fibrous membrane containing CsPbI3was combined with another membrane containing CsPbBr3under a blue light-emitting diode (LED) to create a white LED (WLED) in air successfully with CIE coordinates (0.3020, 0.3029), and a correlated color temperature of 7527 °K, indicating high purity of WLED. Our approach provides a new way to create highly stable, photoluminescent water-resistant perovskite nanocrystalline films.
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Affiliation(s)
- Qi Wang
- School of Environmental and Materials Engineering, Shanghai Polytechnic University, Shanghai 201209, China
| | - Ke Li
- School of Environmental and Materials Engineering, Shanghai Polytechnic University, Shanghai 201209, China
| | - Haohan Yang
- School of Environmental and Materials Engineering, Shanghai Polytechnic University, Shanghai 201209, China
| | - Donghai Lin
- School of Environmental and Materials Engineering, Shanghai Polytechnic University, Shanghai 201209, China
| | - Wan Y. Shih
- School of Biomedical Engineering, Science, and Health Systems, Drexel University, USA
| | - Wei-Heng Shih
- Department of Materials Science and Engineering, Drexel University, USA
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Yu B, Lu Z, Liang G, Yuan Y, Wang H, He J, Yang S. Luminous efficacy enhancement for LED lamps using highly reflective quantum dot-based photoluminescent films. OPTICS EXPRESS 2021; 29:29007-29020. [PMID: 34615019 DOI: 10.1364/oe.431345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 08/09/2021] [Indexed: 06/13/2023]
Abstract
In this study, a strongly reflective and photoluminescent (PL) poly(lactic-co-glycolic acid) quantum dot (QD) hybrid nanofiber (PQHN) structure is introduced to enhance the luminous efficacy of QD-phosphor hybrid white light-emitting diodes (QD-WLEDs). As the thickness of PQHN film increases, the PL is found to continuously increase, exhibiting a maximum peak intensity at 120 μm, which is 1.92 times that at 12 μm, and showing the highest diffuse reflectance of 94.4% at 640 nm. Consequently, while using the QD-WLEDs, the PQHN structure achieves a 53.8% improvement in luminous flux compared with the traditional structure under a similar correlated color temperature (CCT) of 3,540 K, achieving a high luminous efficacy of 202.11 lm W-1 for QD-WLEDs. In addition, the maximum deviation of the CCT is only 11 K when the current is changed from 50 to 950 mA, demonstrating good stability. Therefore, the PQHN films have great potential in lighting systems as a hybrid functional film including light conversion and reflectance.
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A facile fabrication of poly(methyl methacrylate)/$$\alpha$$-NaYF$$_4$$:Eu$$^{3+}$$ tunable electrospun photoluminescent nanofibers. APPLIED NANOSCIENCE 2020. [DOI: 10.1007/s13204-020-01499-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ercan E, Liu CL, Chen WC. Nano-Micro Dimensional Structures of Fiber-Shaped Luminous Halide Perovskite Composites for Photonic and Optoelectronic Applications. Macromol Rapid Commun 2020; 41:e2000157. [PMID: 32608544 DOI: 10.1002/marc.202000157] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 05/19/2020] [Indexed: 12/27/2022]
Abstract
Perovskite nanomaterials have been revealed as highly luminescent structures regarding their dimensional confinement. In particular, their promising potential lies behind remarkable luminescent properties, including color tunability, high photoluminescence quantum yield, and the narrow emission band of halide perovskite (HP) nanostructures for optoelectronic and photonic applications such as lightning and displaying operations. However, HP nanomaterials possess such drawbacks, including oxygen, moisture, temperature, or UV lights, which limit their practical applications. Recently, HP-containing polymer composite fibers have gained much attention owing to the spatial distribution and alignment of HPs with high mechanical strength and ambient stability in addition to their remarkable optical properties comparable to that of nanocrystals. In this review, the fabrication methods for preparing nano-microdimensional HP composite fiber structures are described. Various advantages of the luminescent composite nanofibers are also described, followed by their applications for photonic and optoelectronic devices including sensors, polarizers, waveguides, lasers, light-down converters, light-emitting diode operations, etc. Finally, future directions and remaining challenges of HP-based nanofibers are presented.
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Affiliation(s)
- Ender Ercan
- Department of Chemical Engineering and Advanced Research Center of Green Materials Science and Technology, National Taiwan University, Taipei, 10617, Taiwan
| | - Cheng-Liang Liu
- Department of Chemical and Materials Engineering and Research Center of New Generation Light Driven Photovoltaic Modules, National Central University, Taoyuan, 32001, Taiwan
| | - Wen-Chang Chen
- Department of Chemical Engineering and Advanced Research Center of Green Materials Science and Technology, National Taiwan University, Taipei, 10617, Taiwan
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Kumar S, Jain G, Kumar K, Gupta A, Singh BP, Dhakate SR. A novel fabrication of electrospun polyacrylonitrile/NaYF4:Eu+3 light emitting nanofibers. RSC Adv 2020; 10:24855-24861. [PMID: 35517479 PMCID: PMC9055155 DOI: 10.1039/d0ra03984e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 06/15/2020] [Indexed: 11/26/2022] Open
Abstract
Polyacrylonitrile/NaYF4:Eu+3 nanophosphor composite nanofibers have been successfully prepared using the electrospinning technique. The electrospun nanofibers exhibited intense emission of gradient blue (X2 = 0.254, Y2 = 0.152 and X3 = 0.233, Y3 = 0.139) with different concentrations of nanophosphor under the excitation wavelength of 239 nm. The morphological and structural characterization of the nanofibers confirms the uniform dispersion of nanophosphor, while photoluminescence spectroscopy confirms tunability in luminescence properties. Polyacrylonitrile/NaYF4:Eu+3 nanophosphor composite nanofibers have been successfully prepared using the electrospinning technique.![]()
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Affiliation(s)
- Sanjeev Kumar
- Department of Physics
- R. K. (PG) College Shamli
- C. C. S. University Meerut
- India
| | - Garima Jain
- Department of Physics
- D. A. V. (PG) College Muzaffarnagar
- C. C. S. University Meerut
- India
| | - Kuldeep Kumar
- Department of Physics
- SGTB Khalsa College
- University of Delhi
- India
| | - Ashish Gupta
- Advanced Carbon Products and Metrology Section
- Advanced Materials and Devices Metrology Division
- CSIR-National Physical Laboratory
- New Delhi-110012
- India
| | - B. P. Singh
- Advanced Carbon Products and Metrology Section
- Advanced Materials and Devices Metrology Division
- CSIR-National Physical Laboratory
- New Delhi-110012
- India
| | - S. R. Dhakate
- Advanced Carbon Products and Metrology Section
- Advanced Materials and Devices Metrology Division
- CSIR-National Physical Laboratory
- New Delhi-110012
- India
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Ushakova EV, Matuhina AI, Sokolova AV, Cherevkov SA, Dubavik A, Medvedev OS, Litvin AP, Kurdyukov DA, Golubev VG, Baranov AV. Enhanced stability of the optical responses from all-inorganic perovskite nanocrystals embedded in a synthetic opal matrix. NANOTECHNOLOGY 2019; 30:405206. [PMID: 31247612 DOI: 10.1088/1361-6528/ab2d77] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Nanostructured luminescent materials based on perovskite nanocrystals (p-NCs) are attractive since their optical properties can be tuned in a wide spectral range with high luminescence quantum yields and lifetimes, however, they lack stability. In this work, the optical properties of highly luminescent colloidal p-NCs (CsPbX3, where X = Cl/Br, Br, I) embedded in porous opal matrices are presented. It is shown that the photoluminescence of the p-NCs embedded into opal matrices possess increased longtime stability of its spectral and kinetic parameters under ambient conditions. LEDs based on the developed materials show pure color p-NC emission with stability of its parameters. The results of this work may expand the knowledge of interactions between luminescent nanoparticles within multicomponent nanostructured materials for further photonic applications.
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Liu X, Han J, Li Y, Cao B, Sun C, Yin H, Shi Y, Jin M, Liu C, Sun M, Ding D. Ultrafast carrier dynamics in all-inorganic CsPbBr 3 perovskite across the pressure-induced phase transition. OPTICS EXPRESS 2019; 27:A995-A1003. [PMID: 31510488 DOI: 10.1364/oe.27.00a995] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 05/23/2019] [Indexed: 06/10/2023]
Abstract
The excited-state carrier dynamics of lead halide perovskites play a critical role in their photoelectric properties, and are greatly affected by lattice structural changes. In this work, the carrier dynamics of all-inorganic CsPbBr3 peroveskite, as a function of pressure, are investigated using in situ high-pressure femtosecond transient absorption spectroscopic experiments. Compression is found to drive crystal structural evolution, thereby markedly changing the behavior of charge carriers in CsPbBr3. Before the phase transition, simultaneous prolonging of the carrier relaxation and Auger recombination is achieved alongside a narrowing in the bandgap. The results favor improved efficiency and photovoltaic performance.
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Gao J, Zhou Y, Liu Y, Han X, Guo Q, Lu Z, Guo L, Shang X, Yang W, Niu K, Ming N, Wang Z, Zhang H, Jiang S. Noise-like mode-locked Yb-doped fiber laser in a linear cavity based on SnS 2 nanosheets as a saturable absorber. APPLIED OPTICS 2019; 58:6007-6011. [PMID: 31503920 DOI: 10.1364/ao.58.006007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 06/24/2019] [Indexed: 06/10/2023]
Abstract
In this study, a high-energy noise-like mode-locked Yb-doped fiber laser in a linear cavity was achieved with SnS2-polyvinyl alcohol film as the saturable absorber. In addition, the nonlinear saturable absorption characteristics of the SnS2 were investigated experimentally. The saturation intensity and modulation depth were about 6.01 MW/cm2 and 8.68%, respectively. Under pump power of 422 mW, stable noise-like mode-locked operation with a maximum output power and largest single pulse energy of 9.50 mW and 18.1 nJ, respectively, was obtained. To the best of our knowledge, this study is the first to observe and experimentally investigate noise-like operation in a linear laser cavity. Our study may provide some valuable design guidelines for noise-like operation and create new directions for advanced photonic devices based on SnS2.
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Papagiorgis PG, Manoli A, Alexiou A, Karacosta P, Karagiorgis X, Papaparaskeva G, Bernasconi C, Bodnarchuk MI, Kovalenko MV, Krasia-Christoforou T, Itskos G. Robust Hydrophobic and Hydrophilic Polymer Fibers Sensitized by Inorganic and Hybrid Lead Halide Perovskite Nanocrystal Emitters. Front Chem 2019; 7:87. [PMID: 30863744 PMCID: PMC6399309 DOI: 10.3389/fchem.2019.00087] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 01/31/2019] [Indexed: 11/13/2022] Open
Abstract
Advances in the technology and processing of flexible optical materials have paved the way toward the integration of semiconductor emitters and polymers into functional light emitting fabrics. Lead halide perovskite nanocrystals appear as highly suitable optical sensitizers for such polymer fiber emitters due to their ease of fabrication, versatile solution-processing and highly efficient, tunable, and narrow emission across the visible spectrum. A beneficial byproduct of the nanocrystal incorporation into the polymer matrix is that it provides a facile and low-cost method to chemically and structurally stabilize the perovskite nanocrystals under ambient conditions. Herein, we demonstrate two types of robust fiber composites based on electrospun hydrophobic poly(methyl methacrylate) (PMMA) or hydrophilic polyvinylpyrrolidone (PVP) fibrous membranes sensitized by green-emitting all-inorganic CsPbBr3 or hybrid organic-inorganic FAPbBr3 nanocrystals. We perform a systematic investigation on the influence of the nanocrystal-polymer relative content on the structural and optical properties of the fiber nanocomposites and we find that within a wide content range, the nanocrystals retain their narrow and high quantum yield emission upon incorporation into the polymer fibers. Quenching of the radiative recombination at the higher/lower bound of the nanocrystal:polymer mass ratio probed is discussed in terms of nanocrystal clustering/ligand desorption due to dilution effects, respectively. The nanocomposite's optical stability over an extended exposure in air and upon immersion in water is also discussed. The studies confirm the demonstration of robust and bright polymer-fiber emitters with promising applications in backlighting for LCD displays and textile-based light emitting devices.
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Affiliation(s)
- Paris G. Papagiorgis
- Experimental Condensed Matter Physics Laboratory, Department of Physics, University of Cyprus, Nicosia, Cyprus
| | - Andreas Manoli
- Experimental Condensed Matter Physics Laboratory, Department of Physics, University of Cyprus, Nicosia, Cyprus
| | - Androniki Alexiou
- Experimental Condensed Matter Physics Laboratory, Department of Physics, University of Cyprus, Nicosia, Cyprus
| | - Petroula Karacosta
- Experimental Condensed Matter Physics Laboratory, Department of Physics, University of Cyprus, Nicosia, Cyprus
| | - Xenofon Karagiorgis
- Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, Cyprus
| | - Georgia Papaparaskeva
- Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, Cyprus
| | - Caterina Bernasconi
- Empa - Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
- Laboratory for Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Zurich, Switzerland
| | - Maryna I. Bodnarchuk
- Empa - Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
- Laboratory for Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Zurich, Switzerland
| | - Maksym V. Kovalenko
- Empa - Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
- Laboratory for Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Zurich, Switzerland
| | | | - Grigorios Itskos
- Experimental Condensed Matter Physics Laboratory, Department of Physics, University of Cyprus, Nicosia, Cyprus
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Recent Advances of the Polymer Micro/Nanofiber Fluorescence Waveguide. Polymers (Basel) 2018; 10:polym10101086. [PMID: 30961011 PMCID: PMC6404050 DOI: 10.3390/polym10101086] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 08/24/2018] [Accepted: 09/27/2018] [Indexed: 12/28/2022] Open
Abstract
Subwavelength optical micro/nanofibers have several advantages, such as compact optical wave field and large specific surface area, which make them widely used as basic building blocks in the field of micro-nano optical waveguide and photonic devices. Among them, polymer micro/nanofibers are among the first choices for constructing micro-nano photonic components and miniaturized integrated optical paths, as they have good mechanical properties and tunable photonic properties. At the same time, the structures of polymer chains, aggregated structures, and artificial microstructures all have unique effects on photons. These waveguided micro/nanofibers can be made up of not only luminescent conjugated polymers, but also nonluminous matrix polymers doped with luminescent dyes (organic and inorganic luminescent particles, etc.) due to the outstanding compatibility of polymers. This paper summarizes the recent progress of the light-propagated mechanism, novel design, controllable fabrication, optical modulation, high performance, and wide applications of the polymer micro/nanofiber fluorescence waveguide. The focus is on the methods for simplifying the preparation process and modulating the waveguided photon parameters. In addition, developing new polymer materials for optical transmission and improving transmission efficiency is discussed in detail. It is proposed that the multifunctional heterojunctions based on the arrangement and combination of polymer-waveguided micro/nanofibers would be an important trend toward the construction of more novel and complex photonic devices. It is of great significance to study and optimize the optical waveguide and photonic components of polymer micro/nanofibers for the development of intelligent optical chips and miniaturized integrated optical circuits.
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