期刊
APPLIED PHYSICS LETTERS
卷 101, 期 23, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4769347
关键词
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资金
- Singapore National Research Foundation [NRF-RF-2009-09, NRF-CRP-2011-02]
- Science and Engineering Research Council, Agency for Science, Technology and Research (A*STAR) of Singapore [092 101 0057]
- National Natural Science Foundation of China (NSFC) [61006037, 61177014, 61076015]
- Tianjin Natural Science foundation [11JCZDJC21900, 11JCYDJC25800]
We report a bright cadmium-free, InP-based quantum dot light-emitting diode (QD-LED) with efficient green emission. A maximum brightness close to 700 cd/m(2) together with a relatively low turn-on voltage of 4.5 V has been achieved. With the design of a loosely packed QD layer resulting in the direct contact of poly[N,N'-bis(4-butylphenyl)-N,N'-bis(phenyl)benzidine] (poly-TPD) and 2,2',2 ''-(1,3,5-benzinetriyl)-tris(1-phenyl-1-H-benzimidazole) (TPBi) in the device, a ternary complementary white QD-LED consisting of blue component (poly-TPD), green component (QDs), and red component (exciplex formed at the interface between poly-TPD and TPBi) has been demonstrated. The resulting white QD-LED shows an excellent color rendering index of 95. (C) 2012 American Institute of Physics.[http://dx.doi.org/10.1063/1.4769347]
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