Advancing microarray fabrication:One-pot synthesis and highresolution patterning of UV-crosslinkable perovskite quantum dots  

作　　者：Linfeng Yuan Dejian Chen Kun He Jiamin Xu Kunyuan Xu Jie Hu Sisi Liang Haomiao Zhu 

机构地区：[1]CAS Key Laboratory of Design and Assembly of Functional Nanostructures,and Fujian Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China [2]Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China,Fuzhou 350108,China [3]University of Chinese Academy of Sciences,Beijing 100049,China [4]College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350007,China [5]Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials,Xiamen Research Center of Rare Earth Materials,Haixi Institute,Chinese Academy of Sciences,Xiamen 361021,China

出　　处：《Nano Research》2024年第9期8600-8609,共10页纳米研究（英文版）

基　　金：the Research Project of Mindu Innovation Laboratory(No.2021ZZ114);the Natural Science Foundation of Xiamen(No.3502Z20227255);the Science and Technology Major Project of Fujian Province(No.2021HZ021013).

摘　　要：The development of highly efficient,solution-processable,and environmentally stable perovskite quantum dots(PQDs)is crucial for their accurate high-resolution patterning and subsequently enabling the practical deployment of PQD based emissive display devices.This study presents an innovative strategy for integrating all-inorganic PQDs and ultraviolet(UV)crosslinkable acrylate polymer at a structural and functional level.The achievement is accomplished by meticulous design and one-pot synthesis of UV-crosslinkable CsPbX_(3)(X=Cl,Br,I)PQDs solution,which exhibit outstanding environmental stability.Leveraging the solution-processable characteristics of the resulting UV-crosslinkable PQDs,precise patterning of high-resolution(2μm,7608 pixels·in.^(-1))and colorful PQDs microarrays can be readily achieved through inkjet printing and high-throughput photolithography(~2μm in pitch line/space patterning).The UV cross-linked process guarantees a homogeneous distribution of PQDs,effectively mitigating coffee ring effect and improving the overall quality of stereoscopic microarrays.The photo-cured PQDs film,which undergoes free radical photopolymerization,displays an impressive photoluminescence quantum yield(PL QY)of up to 89.2%,reaching 98%of the value observed in the solution state.The approach outlined in this research is both cost-effective and pragmatic,exhibiting tremendous promise for diverse system-level integrated optoelectronic devices,such as ultra-high-resolution micro-light-emitting device(micro-LED)displays.

关 键 词：perovskite quantum dots microarrays cross-linking strategy Inkjet printing PHOTOLITHOGRAPHY 

分 类 号：O62[理学—有机化学]