Resonance hosts for high efficiency solution-processed blue and white electrophosphorescent devices

作     者：Huanhuan Li Jibiao Jin Yuan Xiang Ying Zhang Ye Tao Mingguang Li Qin Xue Guohua Xie Wei Huang Runfeng Chen Huanhuan Li;Jibiao Jin;Yuan Xiang;Ying Zhang;Ye Tao;Mingguang Li;Qin Xue;Guohua Xie;Wei Huang;Runfeng Chen

作者机构：Key Laboratory for Organic Electronics and Information Displays&Jiangsu Key Laboratory for BiosensorsInstitute of Advanced Materials(IAM)Nanjing University of Posts&TelecommunicationsNanjing 210023China Sauvage Center for Molecular SciencesHubei Key Lab on Organic and Polymeric Optoelectronic MaterialsDepartment of ChemistryWuhan UniversityWuhan 430072China Frontiers Science Center for Flexible Electronics(FSCFE)Shaanxi Institute of Flexible Electronics(SIFE)&Shaanxi Institute of Biomedical Materials and Engineering(SIBME)Northwestern Polytechnical University(NPU)Xi’an 710072China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2020年第63卷第11期

页      面：1645-1651页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 

基　　金：This work was supported by the National Natural Science Foundation of China(21704042,21604039,61875090,51873159,91833306,21674049) the Six Talent Plan of Jiangsu Province(XCL-049) 1311 Talents Program of Nanjing University of Posts and Telecommunications(Dingfeng) the Natural Science Fund for Colleges and Universities in Jiangsu Province(17KJB150017) China Postdoctoral Science Foundation Funded Project(2018M642284) the Nanjing University of Posts and Telecommunications Start-up Fund(NUPTSF)(NY219007,NY217140) the Science and Technology Innovation Project for Overseas Students in Nanjing 

主　　题：solution-processed resonance hosts dynamic self-adaptation high-efficiency electrophosphorescence 

摘      要：The exploration of high-performance solution-processible host materials for blue and white electrophosphorescent devices is a key and fundamental challenge in the ongoing development of organic ***,two solution-processible resonance host materials with self-adaptive characteristics are delicately designed and *** of the dynamic tautomerization upon resonance variation,these smart hosts show self-adaptive and selectively enhanced charge carrier flux at high triplet energy *** by the resonance molecules,solution-processed blue and white devices exhibit excellent maximum current efficiencies(CEs)of 29.8 and 57.3 cd A−1,and external quantum efficiencies(EQEs)up to 14.5%and 23.5%,*** works highlight the significant progress of the solution-processed phosphorescent organic light-emitting diodes(PhOLEDs)using resonance host molecules,potentially furnishing a leap forward in constructing advanced organic semiconductors for next-generation optoelectronic devices.