Journal
NANOMATERIALS
Volume 9, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/nano9091314
Keywords
ultrawide color gamut display; perovskite quantum dots; white LED
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Funding
- National Natural Science Foundation of China [11904302]
- Ministry of Science and Technology, Taiwan (MOST) [MOST 105-2221-E-009-112-MY3, 107-2221-E-009-113-MY3, 107-2221-E-009-114-MY3]
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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.
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