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
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.
