High Efficiency Doping-free White Organic Light Emitting Diodes by Combining Exciplex and Phosphorescent Ultrathin Layer
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Device Fabrication and Physics|更新时间:2022-01-14
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High Efficiency Doping-free White Organic Light Emitting Diodes by Combining Exciplex and Phosphorescent Ultrathin Layer
增强出版
Chinese Journal of LuminescenceVol. 43, Issue 1, Pages: 85-93(2022)
作者机构:
1.华为技术有限公司,广东 深圳 518129
2.成都中电熊猫显示科技有限公司,四川 成都 610200
3.太原理工大学 新材料界面科学与工程教育部重点实验室,山西 太原 030024
作者简介:
基金信息:
Fundamental Research Program of Shanxi Province(20210302123113);National Natural Science Foundation of China(62074109;61775155;61605137);Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi(2020104)
Chao WANG, Xiang-feng LI, Ze-mei LIU, et al. High Efficiency Doping-free White Organic Light Emitting Diodes by Combining Exciplex and Phosphorescent Ultrathin Layer. [J]. Chinese Journal of Luminescence 43(1):85-93(2022)
DOI:
Chao WANG, Xiang-feng LI, Ze-mei LIU, et al. High Efficiency Doping-free White Organic Light Emitting Diodes by Combining Exciplex and Phosphorescent Ultrathin Layer. [J]. Chinese Journal of Luminescence 43(1):85-93(2022) DOI: 10.37188/CJL.20210336.
High Efficiency Doping-free White Organic Light Emitting Diodes by Combining Exciplex and Phosphorescent Ultrathin Layer增强出版
we prepared doping-free white organic light emitting diodes(WOLED) by combining exciplex and phosphorescent ultrathin layer. As results
high efficiency WOLED based two complementary color structure of Ir(pq)
2
acac(~0.5 nm)/mCP∶PO-T2T/Ir(pq)
2
acac(~0.5 nm) and red-green-blue(RGB) color structure of Ir(ppy)
3
(~0.5 nm)/mCP∶PO-T2T/Ir(pq)
2
acac(~0.5 nm) are achieved by setting different colors phosphorescent ultrathin layer on the two sides of blue exciplex emitting layer of mCP∶PO-T2T
respectively. The maximum current efficiency
power efficiency and external quantum efficiency of two complementary color WOLED are 46.1 cd/A
43.9 lm/W and 22.2%
respectively; and the RGB WOLED are 66.8 cd/A
63.5 lm/W and 24.2%
respectively. The discussions demonstrated the efficient energy transfer from high energy blue exciplex to low energy red and green phosphorescent ultrathin layer is responsible for the high efficiency of doping-free WOLED.
关键词
白光有机发光二极管激基复合物超薄层非掺杂
Keywords
white organic light emitting diodesexciplexultrathin layerdoping-free
references
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