標題: Ultrawide Color Gamut Perovskite and CdSe/ZnS Quantum-Dots-Based White Light-Emitting Diode with High Luminous Efficiency
作者: Lin, Chih-Hao
Kang, Chieh-Yu
Verma, Akta
Wu, Tingzhu
Pai, Yung-Min
Chen, Tzu-Yu
Tsai, Chun-Lin
Yang, Ya-Zhu
Sharma, S. K.
Sher, Chin-Wei
Chen, Zhong
Lee, Po-Tseng
Chung, Shu-Ru
Kuo, Hao-Chung
電機學院
光電工程學系
College of Electrical and Computer Engineering
Department of Photonics
關鍵字: ultrawide color gamut display;perovskite quantum dots;white LED
公開日期: 1-Sep-2019
摘要: 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.
URI: http://dx.doi.org/10.3390/nano9091314
http://hdl.handle.net/11536/153117
DOI: 10.3390/nano9091314
期刊: NANOMATERIALS
Volume: 9
Issue: 9
起始頁: 0
結束頁: 0
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