佩多:嘘
掺杂剂
材料科学
光电子学
钙钛矿(结构)
发光二极管
二极管
兴奋剂
量子效率
化学工程
图层(电子)
有机发光二极管
复合材料
工程类
作者
Yushan Liu,Shuang Guo,Jing Feng,Yuefeng Liu,Yan-Gang Bi,Da Yin,Xu-Lin Zhang,Hong-Bo Sun
出处
期刊:Optics Letters
[The Optical Society]
日期:2019-10-01
卷期号:44 (19): 4817-4817
被引量:6
摘要
We demonstrate an enhanced efficiency of all-inorganic perovskite light-emitting diodes (PeLEDs) by doping an electron acceptor of 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) as a p-type dopant into the hole-transport layer (HTL) of poly-triarylamine (PTAA). The conductivity of the PTAA was improved by the formation of the CT complex through the electron transfer from the PTAA to F4TCNQ. Moreover, the hydrophobic surface of the PTAA leads to an improved surface morphology of the perovskite films compared to that on the conventionally used HTL of PEDOT:PSS. As a result, the maximum luminance and efficiency for the doped PTAA-based PeLEDs are 28020 cd/m2 and 13.5 cd/A, respectively, corresponding to 32.7% and 48% improvement in the efficiency compared to those of the pure PTAA or PEDOT:PSS-based PeLEDs.
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