Reversible laser-printing perovskite quantum dots in glass via lanthanide doping

IF 7.4 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Science China Materials Pub Date : 2025-06-06 DOI:10.1007/s40843-025-3414-5

Han Xiao (, ), Zhehong Zhou (, ), Hanqiao Liu (, ), Bin Zhuang (, ), Tao Pang (, ), Lingwei Zeng (, ), Jidong Lin (, ), Ruidan Zhang (, ), Daqin Chen (, )

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引用次数: 0

Abstract

Femtosecond laser (fs) irradiation is an effective way to print perovskite quantum dots (PeQDs) in robust glass. Nevertheless, the laser writing-erasing-recovery process of PeQDs is highly dependent on the glass network structure, which is far from being well understood. In this work, we demonstrate that the lanthanide oxides (Ln₂O₃, Ln=La, Gd and Lu) in borosilicate glass enable to modulate the connectivity of the silicon-oxygen network and control in situ formation of CsPbBr₃ PeQDs induced by fs laser. Importantly, PeQDs can be erased in specific regions through subsequent laser irradiation only when doped with an optimal concentration of Ln₂O₃, which facilitates a looser network structure and reduces the crystallization barrier for ion migration. Subsequently, the degraded perovskite material can autonomously regenerate due to the water molecule invasion. The recovery time shows significant variation determined by the type and concentration of lanthanide ions. This reversible luminescence can be cycled multiple times while maintaining stable luminescence properties, providing a foundation for the development of innovative encryption methods in safeguarding information and anti-counterfeiting.

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利用镧系掺杂技术在玻璃中可逆激光打印钙钛矿量子点

飞秒激光（fs）照射是在坚固玻璃上打印钙钛矿量子点（PeQDs）的有效方法。然而，peqd的激光写入-擦除-恢复过程高度依赖于玻璃网络结构，这一点还远远没有得到很好的理解。在这项工作中，我们证明了硼硅酸盐玻璃中的镧系氧化物（Ln2O3, Ln=La， Gd和Lu）能够调节硅氧网络的连连性，并控制激光诱导CsPbBr3 PeQDs的原位形成。重要的是，只有当掺杂了最佳浓度的Ln2O3时，PeQDs才能通过后续激光照射在特定区域被擦除，这有助于形成更松散的网络结构，并减少离子迁移的结晶障碍。随后，由于水分子的侵入，降解的钙钛矿材料可以自主再生。镧系离子的种类和浓度决定了恢复时间的显著变化。这种可逆发光可以多次循环，同时保持稳定的发光特性，为开发创新的信息保护和防伪加密方法提供了基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science China Materials Materials Science-General Materials Science

CiteScore

11.40

自引率

7.40%

发文量

949

期刊介绍： Science China Materials (SCM) is a globally peer-reviewed journal that covers all facets of materials science. It is supervised by the Chinese Academy of Sciences and co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China. The journal is jointly published monthly in both printed and electronic forms by Science China Press and Springer. The aim of SCM is to encourage communication of high-quality, innovative research results at the cutting-edge interface of materials science with chemistry, physics, biology, and engineering. It focuses on breakthroughs from around the world and aims to become a world-leading academic journal for materials science.