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1. Highly Efficient and Stable White Light‐Emitting Diodes Using Perovskite Quantum Dot Paper

Author

Chieh‐Yu Kang, Chun‐Ho Lin, Chih‐Hao Lin, Ting‐You Li, Sung‐Wen Huang Chen, Chun‐Lin Tsai, Chin‐Wei Sher, Ting‐Zhu Wu, Po‐Tsung Lee, Xuezhu Xu, Maolin Zhang, Chih‐Hsiang Ho, Jr‐Hau He, and Hao‐Chung Kuo

Subjects
light‐emitting diodes, paper, perovskites, quantum dots, stability, Science
Abstract

Abstract Perovskite quantum dots (PQDs) are a competitive candidate for next‐generation display technologies as a result of their superior photoluminescence, narrow emission, high quantum yield, and color tunability. However, due to poor thermal resistance and instability under high energy radiation, most PQD‐based white light‐emitting diodes (LEDs) show only modest luminous efficiency of ≈50 lm W−1 and a short lifetime of

Published
2019
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2. White Light‐Emitting Diodes: Highly Efficient and Stable White Light‐Emitting Diodes Using Perovskite Quantum Dot Paper (Adv. Sci. 24/2019)

Author

Ting-You Li, Chih-Hsiang Ho, Chieh-Yu Kang, Tingzhu Wu, Chun-Ho Lin, Jr-Hau He, Sung-Wen Huang Chen, Chih Hao Lin, Maolin Zhang, Po-Tsung Lee, Xuezhu Xu, Hao-Chung Kuo, Chun‐Lin Tsai, and Chin-Wei Sher

Subjects
Engineering, business.industry, General Chemical Engineering, paper, General Engineering, perovskites, General Physics and Astronomy, Medicine (miscellaneous), quantum dots, stability, Biochemistry, Genetics and Molecular Biology (miscellaneous), Engineering physics, light‐emitting diodes, White light, Cover Picture, General Materials Science, Christian ministry, business, Diode
Abstract

C.-Y.K. and C.-H.L. contributed equally to this work. This publication was financially supported by the Ministry of Science and Technology, Taiwan (MOST) (107-2221-E-009-113-MY3), the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) (OSR-2016-CRG5-3005), the KAUST Solar Center, KAUST Catalysis Center, and KAUST baseline funding. The authors would like to thank Prof. Nakamura Shuji of University of California, Santa Barbara and Dr. Lin Chien-Chung of the Industrial Technology Research Institute, Taiwan for the helpful discussion, and express sincere gratitude to Everlight Electronics for helpful technical support with the LED devices.

Published
2019

3. Highly Efficient and Stable White Light‐Emitting Diodes Using Perovskite Quantum Dot Paper

Author

Chih Hao Lin, Sung Wen Huang Chen, Maolin Zhang, Chin Wei Sher, Chun Lin Tsai, Xuezhu Xu, Jr-Hau He, Chieh Yu Kang, Chih-Hsiang Ho, Ting-You Li, Po-Tsung Lee, Hao-Chung Kuo, Chun-Ho Lin, and Tingzhu Wu

Subjects
Photoluminescence, Materials science, General Chemical Engineering, perovskites, General Physics and Astronomy, Medicine (miscellaneous), quantum dots, Phosphor, 02 engineering and technology, Green-light, 010402 general chemistry, 01 natural sciences, Biochemistry, Genetics and Molecular Biology (miscellaneous), law.invention, law, General Materials Science, lcsh:Science, Absorption (electromagnetic radiation), Diode, Full Paper, business.industry, paper, General Engineering, Full Papers, stability, 021001 nanoscience & nanotechnology, 0104 chemical sciences, light‐emitting diodes, Quantum dot, Optoelectronics, lcsh:Q, 0210 nano-technology, business, Luminous efficacy, Light-emitting diode
Abstract

Perovskite quantum dots (PQDs) are a competitive candidate for next‐generation display technologies as a result of their superior photoluminescence, narrow emission, high quantum yield, and color tunability. However, due to poor thermal resistance and instability under high energy radiation, most PQD‐based white light‐emitting diodes (LEDs) show only modest luminous efficiency of ≈50 lm W−1 and a short lifetime of, Perovskite quantum dot paper, a new type of perovskite quantum dot film, is demonstrated. Using a simple, fast, scalable, and inexpensive paper fabrication process, the resulting perovskite quantum dot paper is uniform, of high quality, and very stable; it is able to bear high energy radiation and greatly improve the efficiency of perovskite quantum dot–based white light‐emitting diodes.

Published
2019

4. White Light‐Emitting Diodes: Highly Efficient and Stable White Light‐Emitting Diodes Using Perovskite Quantum Dot Paper (Adv. Sci. 24/2019).

Author

Kang, Chieh‐Yu, Lin, Chun‐Ho, Lin, Chih‐Hao, Li, Ting‐You, Huang Chen, Sung‐Wen, Tsai, Chun‐Lin, Sher, Chin‐Wei, Wu, Ting‐Zhu, Lee, Po‐Tsung, Xu, Xuezhu, Zhang, Maolin, Ho, Chih‐Hsiang, He, Jr‐Hau, and Kuo, Hao‐Chung

Subjects
*QUANTUM dots, *QUANTUM dot synthesis, *DIODES, *PEROVSKITE
Published
2019
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5. Highly Efficient and Stable White Light‐Emitting Diodes Using Perovskite Quantum Dot Paper.

Author

Kang, Chieh‐Yu, Lin, Chun‐Ho, Lin, Chih‐Hao, Li, Ting‐You, Huang Chen, Sung‐Wen, Tsai, Chun‐Lin, Sher, Chin‐Wei, Wu, Ting‐Zhu, Lee, Po‐Tsung, Xu, Xuezhu, Zhang, Maolin, Ho, Chih‐Hsiang, He, Jr‐Hau, and Kuo, Hao‐Chung

Subjects
*QUANTUM dots, *THERMAL resistance, *PHOSPHORS, *DIODES, *PEROVSKITE, *CELLULOSE nanocrystals, *THERMAL instability, *LIGHT absorption
Abstract

Perovskite quantum dots (PQDs) are a competitive candidate for next‐generation display technologies as a result of their superior photoluminescence, narrow emission, high quantum yield, and color tunability. However, due to poor thermal resistance and instability under high energy radiation, most PQD‐based white light‐emitting diodes (LEDs) show only modest luminous efficiency of ≈50 lm W−1 and a short lifetime of <100 h. In this study, by incorporating cellulose nanocrystals, a new type of QD film is fabricated: CH3NH3PbBr3 PQD paper that features 91% optical absorption, intense green light emission (518 nm), and excellent stability attributed to the complexation effect between the nanocellulose and PQDs. The PQD paper is combined with red K2SiF6:Mn4+ phosphor and blue GaN LED chips to fabricate a high‐performance white LED demonstrating ultrahigh luminous efficiency (124 lm W−1), wide color gamut (123% of National Television System Committee), and long operation lifetime (240 h), which paves the way for advanced lighting technology. [ABSTRACT FROM AUTHOR]

Published
2019
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