材料科学
量子点
钙钛矿(结构)
光致聚合物
聚合
纳米晶
聚合物
纳米技术
光电子学
数字微镜装置
单体
卤化物
动力学
化学工程
复合材料
化学
无机化学
物理
量子力学
工程类
作者
Mamoru Morinaga,Takuto Iwaki,Hisataka Tanaka,István Lagzi,Hideyuki Nakanishi
标识
DOI:10.1021/acsami.2c23162
摘要
All-inorganic cesium lead halide perovskite quantum dots (QDs) have several potential applications, owing to their unique optical and electronic properties. However, patterning perovskite QDs using conventional methods is difficult because of the ionic nature of QDs. Here, we demonstrate a unique approach, in which perovskite QDs are patterned in polymer films through the photocuring of monomers under patterned light illumination. The pattern illumination creates the transient polymer concentration difference, which drives the QDs to form patterns; hence controlling polymerization kinetics is essential for the generation of the QD pattern. For the patterning mechanism, a light projection system equipped with a digital micromirror device (DMD) is developed; thus, light intensity, an important factor to determine polymerization kinetics, is precisely controlled per position on the photocurable solution, resulting in the understanding of the mechanism and the formation of distinct QD patterns. The demonstrated approach assisted by the DMD-equipped projection system can form desired perovskite QD patterns solely by patterned light illumination, paving the way for the development of patterning methods for perovskite QDs and other nanocrystals.
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