Ultrawide Color Gamut Perovskite and CdSe/ZnS Quantum-Dots-Based White Light-Emitting Diode with High Luminous Efficiency.
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.
['Lin|Chih-Hao|CH|0000-0003-0524-3522', 'Kang|Chieh-Yu|CY|', 'Verma|Akta|A|', 'Wu|Tingzhu|T|0000-0001-9453-6823', 'Pai|Yung-Min|YM|0000-0003-3156-088X', 'Chen|Tzu-Yu|TY|', 'Tsai|Chun-Lin|CL|', 'Yang|Ya-Zhu|YZ|', 'Sharma|S K|SK|', 'Sher|Chin-Wei|CW|', 'Chen|Zhong|Z|', 'Lee|Po-Tseng|PT|', 'Chung|Shu-Ru|SR|0000-0002-8594-411X', 'Kuo|Hao-Chung|HC|']
perovskite quantum dots ultrawide color gamut display white LED