浙江大学邱建荣团队开发了玻璃中稳定钙钛矿纳米晶体的三维直接光刻策略。相关研究成果发表在2022年1月21日出版的《科学》。

溶液中钙钛矿型纳米晶（PNCs）的材料组成工程和器件制造会引入有机污染，需要几个合成、加工和稳定步骤。

研究人员报道了具有可调成分和玻璃带隙的PNCs的三维（3D）直接光刻。通过超快激光诱导液相纳米分离，将卤化物离子分布控制在纳米尺度。PNCs对紫外线照射、有机溶液和高温（高达250°C）具有显著的稳定性。玻璃印刷3D结构用于光存储、微型发光二极管和全息显示。验证了所提出的PNCs形成机制和成分可调性。

附：英文原文

Title: Three-dimensional direct lithography of stable perovskite nanocrystals in glass

Author: Ke Sun, Dezhi Tan, Xinyuan Fang, Xintao Xia, Dajun Lin, Juan Song, Yonghong Lin, Zhaojun Liu, Min Gu, Yuanzheng Yue, Jianrong Qiu

Issue&Volume: 2022-01-21

Abstract: Material composition engineering and device fabrication of perovskite nanocrystals (PNCs) in solution can introduce organic contamination and entail several synthetic, processing, and stabilization steps. We report three-dimensional (3D) direct lithography of PNCs with tunable composition and bandgap in glass. The halide ion distribution was controlled at the nanoscale with ultrafast laser–induced liquid nanophase separation. The PNCs exhibit notable stability against ultraviolet irradiation, organic solution, and high temperatures (up to 250°C). Printed 3D structures in glass were used for optical storage, micro–light emitting diodes, and holographic displays. The proposed mechanisms of both PNC formation and composition tunability were verified.

DOI: abj2691

Source: https://www.science.org/doi/10.1126/science.abj2691