Unveiling the Interfacial Properties of Organic Single-Crystal Hole-Transporting Layers for High-Performance Light-Emitting

作     者：Gao-Da Ye I Su-Heng Li I Ran Ding |Runda Guo?|Hu Zhang|Ze-Qing Liu|Fangxu Yang|Lingjie Sun|Yansong Li|Xiaobo Du|Xi-Bin WangI Lei Wang|Yue-Feng Liu|Hong-Hua Fang|Yu Liu|Bin Xu|Jing Feng Gao-Da Ye;I Su-Heng Li;I Ran Ding;|Runda Guo?|Hu Zhang|Ze-Qing Liu|Fangxu Yang|Lingjie Sun|Yansong Li|Xiaobo Du|Xi-Bin WangI Lei Wang|Yue-Feng Liu|Hong-Hua Fang|Yu Liu|Bin Xu|Jing Feng

作者机构：Istate Key Laboratory of Integrated OptoelectronicsCollege of Electronic Science and EngineeringJilin UniversityChangchunChina I 2wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhanChina I 3State Key Laboratory of Supermolecular Structures and MaterialsThe Institute of Theoretical ChemistryJilin UniversityChangchunChina I Department of ChemistrySchool of ScienceKey Laboratory of Organic Integrated CircuitsMinistry of Education and TianjinKey Laboratory of Molecular Optoelectronic SciencesTianjin UniversityTianjinChina I'BOE Technology Group Co.Ltd.BeijingChina I°Department of Precision InstrumentState Key Laboratory of Precision Measurement Technology and InstrumentsTsinghua UniversityBeijingChina 

出 版 物：《SmartMat》 (智能材料(英文))

年 卷 期：2025年第6卷第1期

页      面：227-238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）] 

基　　金：Science and Technology Development Program of Jilin, (20220101109JC) National Key Research and Development Program of China, NKRDPC, (2020YFA0715000, 2022YFB3607500, 2024YFB3612500) National Key Research and Development Program of China, NKRDPC National Natural Science Foundation of China, NSFC, (61825402, 62274076, U24A20293) National Natural Science Foundation of China, NSFC 

主　　题：electroluminescence interfacial properties OLEDs organic single crystals single-crystal HTLs 

摘      要：Organic single crystals with long-range molecular periodic ordering ensure superior charge-transport properties and low defect density,which have been considered promising candidates for charge-transporting materials in organic light-emitting devices(OLEDs).The functional interfaces of OLEDs play a critical role in charge-transporting and light-emitting behaviors,while the interfacial properties of organic single crystals in OLEDs and their impact on device performance have been rarely ***,two typical organic single crystals,1,4-bis(4-methylstyryl)benzene(BSB-Me)and 2,6-diphenylanthracene(DPA)with different molecular formulas and packing structures,are introduced as the single-crystal hole-transporting layers(HTLs)for a systematic investigation of the interfacial properties between single-crystal HTLs and active emissive ***-Me single-crystal HTLs offer satisfied surface wettability and enhanced interfacial interaction,which dominate the charge-transporting and light-emitting behaviors of the *** improved interfacial properties are responsible for the superior light out-coupling efficiency of BSB-Me single-crystal OLEDs with efficient exciton recombination and minimal Joule heat *** consequence,BSB-Me single-crystal OLEDs exhibit a maximum luminance of 50,170 cd/m?and a peak EQE of 8.78%,which are better than DPA-based ***,BSB-Me single-crystal HTLs with favorable interfacial properties enable large-area OLEDs withuniform EL emission over thewhole light-emitting area of1mm×1mm.