期刊
APPLIED PHYSICS LETTERS
卷 110, 期 6, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4975480
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资金
- National Key Research and Development Program of China [2016YFF02033604]
- Guangdong Natural Science Foundation [2014A030310253, 2016A030310360]
- Postdoctoral Science Foundation of China [2015M572313]
- Fundamental Research Funds for the Central Universities [2015ZM070]
- National Natural Science Foundation of China [51602065]
- Guangdong Science and Technology Plan [2016A040403037, 2016A010101026]
Doping-free white organic light-emitting diodes (DF-WOLEDs) are promising for the low-cost commercialization because of their simplified device structures. However, DF-WOLEDs reported thus far in the literature are based on the use of blue single molecular emitters, whose processing can represent a crucial point in device manufacture. Herein, DF-WOLEDs without the blue single molecular emitter have been demonstrated by managing a blue exciplex system. For the single-molecular-emitter (orange or yellow emitter) DF-WOLEDs, (i) a color rendering index (CRI) of 81 at 1000 cd/m(2) can be obtained, which is one of the highest for the single-molecular-emitter WOLEDs, or (ii) a high efficiency of 35.4 lm/W can be yielded. For the dual-molecular-emitter (yellow/red emitters) DF-WOLED, a high CRI of 85 and low correlated color temperature of 2376K at 1000 cd/m(2) have been simultaneously achieved, which has not been reported by previous DF-WOLEDs. Such presented findings may unlock an alternative avenue to the simplified but high-performance WOLEDs. Published by AIP Publishing.
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