Ultrawide Color Gamut Perovskite and CdSe/ZnS Quantum-Dots-Based White Light-Emitting Diode with High Luminous Efficiency

Chih-Hao Lin; Chieh-Yu Kang; Akta Verma; Tingzhu Wu; Yung-Min Pai; Tzu-Yu Chen; Chun-Lin Tsai; Ya-Zhu Yang; S.K. Sharma; Chin-Wei Sher; Zhong Chen; Po-Tseng Lee; Shu-Ru Chung; Hao-Chung Kuo

doi:10.3390/nano9091314

Nanomaterials (Sep 2019)

Ultrawide Color Gamut Perovskite and CdSe/ZnS Quantum-Dots-Based White Light-Emitting Diode with High Luminous Efficiency

Chih-Hao Lin,
Chieh-Yu Kang,
Akta Verma,
Tingzhu Wu,
Yung-Min Pai,
Tzu-Yu Chen,
Chun-Lin Tsai,
Ya-Zhu Yang,
S.K. Sharma,
Chin-Wei Sher,
Zhong Chen,
Po-Tseng Lee,
Shu-Ru Chung,
Hao-Chung Kuo

Affiliations

Chih-Hao Lin: Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
Chieh-Yu Kang: Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
Akta Verma: Department of Applied Physics, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, India
Tingzhu Wu: Department of Electronic Science, Fujian Engineering Research Center for Solid-State Lighting, Xiamen University, Xiamen 361005, China
Yung-Min Pai: Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
Tzu-Yu Chen: Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
Chun-Lin Tsai: Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
Ya-Zhu Yang: Department of Materials Science and Engineering, National Formosa University, Yunlin 63201, Taiwan
S.K. Sharma: Department of Applied Physics, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, India
Chin-Wei Sher: Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
Zhong Chen: Department of Electronic Science, Fujian Engineering Research Center for Solid-State Lighting, Xiamen University, Xiamen 361005, China
Po-Tseng Lee: Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
Shu-Ru Chung: Department of Materials Science and Engineering, National Formosa University, Yunlin 63201, Taiwan
Hao-Chung Kuo: Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan

DOI: https://doi.org/10.3390/nano9091314
Journal volume & issue: Vol. 9, no. 9
p. 1314

Abstract

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We demonstrate excellent color quality of liquid-type white light-emitting diodes (WLEDs) using a combination of green light-emitting CsPbBr3 and red light-emitting CdSe/ZnS quantum dots (QDs). Previously, we reported red (CsPbBr1.2I1.8) and green (CsPbBr3) perovskite QDs (PQDs)-based WLEDs with high color gamut, which manifested fast anion exchange and stability issues. Herein, the replacement of red PQDs with CdSe/ZnS QDs has resolved the aforementioned problems effectively and improved both stability and efficiency. Further, the proposed liquid-type device possesses outstanding color gamut performance (132% of National Television System Committee and 99% of Rec. 2020). It also shows a high efficiency of 66 lm/W and an excellent long-term operation stability for over 1000 h.

Published in Nanomaterials

ISSN: 2079-4991 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry
Website: https://www.mdpi.com/journal/nanomaterials

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