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Air-Stable Ultrabright Inverted Organic Light-Emitting Devices with Metal Ion-Chelated Polymer Injection Layer 被引量:4

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摘要 Here,this work presents an air-stable ultrabright inverted organic lightemitting device(OLED)by using zinc ionchelated polyethylenimine(PEI)as electron injection layer.The zinc chelation is demonstrated to increase the conductivity of the PEI by three orders of magnitude and passivate the polar amine groups.With these physicochemical properties,the inverted OLED shows a record-high external quantum efficiency of 10.0% at a high brightness of 45,610 cd m^(-2) and can deliver a maximum brightness of 121,865 cd m^(-2).Besides,the inverted OLED is also demonstrated to possess an excellent air stability(humidity,35%)with a half-brightness operating time of 541 h@1000 cd m^(-2) without any protection nor encapsulation.
出处 《Nano-Micro Letters》 SCIE EI CAS CSCD 2022年第1期239-249,共11页 纳微快报(英文版)
基金 supported by the National Natural Science Foundation of China(Grant Nos.61905086,62174067,62175085) Science and Technology Development Planning of Jilin Province(Project Nos.20190101024JH,20200201296JC) the Hong Kong Scholars Program(Project No.XJ2020028) grants from the Research Grants Council of the Hong Kong Special Administrative Region,China(Project Nos.11300418 and 11300419).
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