Transparent OLED displays for selective bidirectional viewing using ZnO/Yb:Ag cathode with highly smooth and low-barrier surface

作     者：Eun-young Choi Sung-Cheon Kang Kanghoon Kim Su-Hyeon Lee Jeong-Beom Kim Jang-Kun Song Eun-young Choi;Sung-Cheon Kang;Kanghoon Kim;Su-Hyeon Lee;Jeong-Beom Kim;Jang-Kun Song

作者机构：Department of Electrical and Computer EngineeringSungkyunkwan UniversitySuwon-siRepublicof Korea Department of Semiconductor and Display EngineeringSungkyunkwan UniversitySuwon-siRepublicof Korea 

出 版 物：《Light(Science & Applications)》 (光(科学与应用)(英文版))

年 卷 期：2025年第14卷第3期

页      面：673-683页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：supported by the National Research Foundation of Korea(NRF)(NRF-2022R1A4A1028702,NRF-2022M3D1A2083618,and RS-2023-00241971) by the ICT Creative Consilience Program(ITP-2023-2020-0-01821) funded by the Ministry of Science,ICT Future Planning,and by Korea Institute for Advancement of Technology(KIAT)(00418086,The Competency Development Programfor Industry Specialist) 

主　　题：transparent OLED displays transparent cathodesa troled displays significantly enhance user experiencethis selective bidirectional viewing ZNO Yb Ag cathode low barrier surface highly smooth surface 

摘      要：Transparent organic light-emitting diode(TrOLED)displays represent cutting-edge technology posed to significantly enhance user *** study addresses two pivotal challenges in TrOLED ***,we focus on the innovation of transparent cathodes,a fundamental component in TrOLEDs,by introducing a ZnO/Yb:Ag *** cathode employs a combination of seed layer and metal doping techniques to achieve a highly uniform surface morphology and a low surface energy *** optimized Yb:Ag cathode on ZnO,with a mere thickness of 15 nm,exhibits remarkable properties:an extremely low surface roughness of 0.52 nm,sheet resistance of 11.6Ω γ^(-1),an optical transmittance of 86.7%at 510 nm,and tunable work function(here,optimized to be 3.86 eV),ensuring superior electron injection ***,we propose a novel TrOLED pixel structure that features selective bidirectional viewing,allowing different types of information to be selectively displayed on each side while preserving overall transparency and minimizing pixel *** design innovation distinguishes itself from conventional TrOLEDs that display images on only one *** bidirectional TrOLED design not only enhances openness and esthetic appeal but also holds promise for diverse applications across various user environments.