绿光延迟荧光有机发光二极管外量子效率超过 30%。
Above 30% external quantum efficiency in green delayed fluorescent organic light-emitting diodes.
机构信息
†Department of Polymer Science and Engineering, Dankook University, Gyeonggi-do 448-701, Korea.
‡School of Chemical Engineering, Sungkyunkwan University 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 440-746, Korea.
出版信息
ACS Appl Mater Interfaces. 2015 May 13;7(18):9625-9. doi: 10.1021/acsami.5b01220. Epub 2015 Apr 29.
Highly efficient green thermally activated delayed fluorescent organic light-emitting diodes with an external quantum efficiency of 31.2% were investigated by using 3-(3-(carbazole-9-yl)phenyl) pyrido[3',2':4,5]furo[2,3-b]pyridine (3CzPFP) derived from carbazole and pyrido[3',2':4,5]furo[2,3-b]pyridine. The host material showed well-matched photoluminescence emission with absorption of the green dopant material, (4s,6s)-2,4,5,6-tetra(9H-carbazol-9-yl)isophthalonitrile (4CzIPN) and harvested all excitons of 4CzIPN. The 3CzPFP:4CzIPN film exhibited high photoluminescence quantum yield of 100%, and the green delayed fluorescence device employing the 3CzPFP host showed high maximum quantum efficiency of 31.2 ± 0.5% at 1% doping after optimization of the device structure.
研究了一种高效的绿色热激活延迟荧光有机发光二极管，其外量子效率为 31.2%，使用了 3-(3-(咔唑-9-基)苯基)吡啶并[3',2':4,5]呋喃[2,3-b]吡啶（3CzPFP），该材料由咔唑和吡啶并[3',2':4,5]呋喃[2,3-b]吡啶衍生而来。主体材料的光致发光发射与绿色掺杂材料（4s,6s）-2,4,5,6-四（9H-咔唑-9-基）间苯二甲腈（4CzIPN）的吸收相匹配，并收集了 4CzIPN 的所有激子。3CzPFP:4CzIPN 薄膜的光致发光量子产率高达 100%，采用 3CzPFP 主体的绿色延迟荧光器件在优化器件结构后，在 1%掺杂时的最大量子效率高达 31.2±0.5%。
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