Ultrahigh-resolution,high-fidelity quantum dot pixels patterned by dielectric electrophoretic deposition  

作　　者：Chengzhao Luo Yanhui Ding Zhenwei Ren Chenglong Wu Yonghuan Huo Xin Zhou Zhiyong Zheng Xinwen Wang Yu Chen 

机构地区：[1]School of Optoelectronic Science and Engineering&Collaborative Innovation Center of Suzhou Nano Science and Technology,Soochow University,Suzhou 215006,China [2]National University of Singapore Suzhou Research Institute,Dushu Lake Science and Education Innovation District,Suzhou 215123,China

出　　处：《Light(Science & Applications)》2024年第11期2745-2755,共11页光（科学与应用)（英文版）

基　　金：supported by the National Key R&D Program of China(Grant Nos.2022YFB3608200 and 2021YFB2802201);the National Natural Science Foundation of China(Grant Nos.62275183 and 62105231);the Natural Science Foundation of Jiangsu Province of China(Grant No.BK20210712);the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(23KJA430013)。

摘　　要：The high pixel resolution is emerging as one of the key parameters for the next-generation displays.Despite the development of various quantum dot(QD)patterning techniques,achieving ultrahigh-resolution(>10,000 pixels per inch(PPI))and high-fidelity QD patterns is still a tough challenge that needs to be addressed urgently.Here,we propose a novel and effective approach of orthogonal electric field-induced template-assisted dielectric electrophoretic deposition to successfully achieve one of the highest pixel resolutions of 23090(PPI)with a high fidelity of up to 99%.Meanwhile,the proposed strategy is compatible with the preparation of QD pixels based on perovskite CsPbBr3 and conventional CdSe QDs,exhibiting a wide applicability for QD pixel fabrication.Notably,we further demonstrate the great value of our approach to achieve efficiently electroluminescent QD pixels with a peak external quantum efficiency of 16.5%.Consequently,this work provides a general approach for realizing ultrahighresolution and high-fidelity patterns based on various QDs and a novel method for fabricating QD-patterned devices with high performance.

关 键 词：RESOLUTION QUANTUM DIELECTRIC 

分 类 号：TN873[电子电信—信息与通信工程]