Liang Jie, Wang Kang, Du Yuxiang, Zhang Chunhuan, Yan Yongli, Zhao Yong Sheng
Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
University of Chinese Academy of Sciences, Beijing 100049, China.
ACS Appl Mater Interfaces. 2022 Jan 12;14(1):1774-1782. doi: 10.1021/acsami.1c21248. Epub 2021 Dec 30.
Owing to outstanding optoelectronic properties, halide perovskites are great candidates for novel laser display applications. However, the realization of their practical flat-panel display applications is challenging because of the incapacity to controllably assemble different halide perovskite microlaser arrays onto an identical substrate as pixelated full-color panels due to intrinsic fragile crystal lattices. Here, perovskite red-green-blue (RGB) microdisk arrays are reported, acting as flat-panels for full-color laser displays. A universal screen-overprinting technology is developed to integrate full-color perovskite microdisk arrays on a prepatterned template, which is on the basis of wet-solute-chemical dynamics involving a combination of surface tailoring and solvent selection. Via such an overprinting method, perovskite RGB microlaser matrices with precise localizations and well-defined dimensions were fabricated on an identical substrate, and each set of RGB microlaser served as a pixel for full-color display panels. On this basis, static and dynamic laser displays have been demonstrated with as-prepared full-color panels. These results will provide novel design concepts and device structures for future full-color laser display applications.
由于卤化物钙钛矿具有出色的光电特性，它们是新型激光显示应用的理想候选材料。然而，由于其固有的脆弱晶格，无法将不同的卤化物钙钛矿微激光阵列可控地组装到同一基板上形成像素化全彩面板，因此实现其实际的平板显示应用具有挑战性。在此，报道了钙钛矿红-绿-蓝（RGB）微盘阵列，其可作为全彩激光显示的平板。开发了一种通用的丝网套印技术，以将全彩钙钛矿微盘阵列集成到预图案化的模板上，该技术基于涉及表面剪裁和溶剂选择相结合的湿溶质化学动力学。通过这种套印方法，在同一基板上制造了具有精确定位和明确尺寸的钙钛矿RGB微激光矩阵，每组RGB微激光用作全彩显示面板的一个像素。在此基础上，已用制备的全彩面板展示了静态和动态激光显示。这些结果将为未来的全彩激光显示应用提供新颖的设计概念和器件结构。
