发光学报2023，Vol.44Issue(12)：2085-2097,13.DOI:10.37188/CJL.20230228
喷墨打印量子点薄膜:墨水溶剂的选择策略
Inkjet Printing Quantum Dot Films:Solvent Selection Strategies for Jetting Inks
摘要
Abstract
The morphology of quantum dots(QDs)films fabricated by inkjet printing makes a marked impact on the performance of multi-layer photoelectronic devices,such as quantum dot light emitting diodes,where coffee-ring and bulge phenomena behave as the typical poor morphology types.Realizing high-quality QDs films through droplet modulation is key to the development of QDs electroluminescent displays.Ink engineering has been proven effective in adjusting the film morphology.However,a well-tailored ink with precise rheological properties to eliminate coffee ring or bulge requires multiple time-consuming experimental attempts,resulting in lower working efficiency.In this work,we sought to directly bridge the gap between the rheological properties of solvents and the profiles of inkjet-printed QDs films with post-mortem film analysis and machine learning methods adopted for mutual proof.With red QDs as the solutes,and alkanes or chain esters as solvents,work on unitary-solvent and binary-solvent ink systems was investigated to find out that generally,the boiling point of the used solvent displayed significant importance high-er than that of surface tension or viscosity in both unitary and binary systems.Specifically,the film profile was close-ly related to the solvent with a higher boiling point in binary systems and uniform films were revealed.A boiling point range of 250-265℃ for the solvent in the unitary-solvent ink system or for the higher-boiling-point solvent in the bi-nary-solvent ink systems can promisingly result in uniform films after drying.关键词
量子点墨水/喷墨打印/溶剂/机器学习Key words
quantum dot ink/inkjet printing/solvent/machine learning分类
数理科学引用本文复制引用
欧家琦,彭曾一,王俊杰,李丹阳,宋家宁,彭俊彪..喷墨打印量子点薄膜:墨水溶剂的选择策略[J].发光学报,2023,44(12):2085-2097,13.基金项目
广东省重点研发计划(2022B0303010001) （2022B0303010001）
国家重点研发计划(2022YFB3603103) （2022YFB3603103）
国家自然科学基金(62074059)Supported by Key R&D Plan of Guangdong Province(2022B0303010001) （62074059）
National key Research and Development Program of China(2022YFB3603103) （2022YFB3603103）
National Natural Science Foundation of China(62074059) （62074059）
