Chiral Lead-Free Double Perovskite Single-Crystalline Microwire Arrays for Anisotropic Second-Harmonic Generation,ACS Applied Materials & Interfaces

当前位置： X-MOL 学术 › ACS Appl. Mater. Interfaces › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Chiral Lead-Free Double Perovskite Single-Crystalline Microwire Arrays for Anisotropic Second-Harmonic Generation
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2022-08-19 , DOI: 10.1021/acsami.2c06856
Ziwei Yu ₁ , Shiqi Cao ₂ , Yingjie Zhao ₃ , Yangwu Guo ₁ , Meiqiu Dong ₁ , Yue Fu ₁ , Jinjin Zhao ₄ , Jingrun Yang ₂ , Lei Jiang _{1,

4} , Yuchen Wu _{1,

4}

Affiliation

Halide double perovskites present a new branch for versatile optoelectronic devices because of their huge structural compatibility and environmental friendliness, whereas nonlinear optics (NLO) devices remain blank for this fascinating family. Simultaneously, the precise patterning of single-crystalline perovskite microwire arrays remains a challenge for the integration of NLO devices. Herein, we designed lead-free chiral 2D double perovskites with the nonsymmetrical structure presenting second-harmonic generation (SHG). Furthermore, perovskite single-crystalline arrays with regulated geometry, pure orientation, and high crystallinity are prepared using the capillary-bridge confined assembly technique. The efficient SHG originates from the asymmetric crystal structure and high crystallinity of the microwire arrays. Compared with their polycrystalline thin-film counterparts, linearly polarized SHG and a higher SHG conversion efficiency are demonstrated based on microwire arrays. The results not only expand the applications of lead-free double perovskites in the NLO-integrated fields but also provide a viable way for lead-free optoelectronic devices.

中文翻译：

用于各向异性二次谐波产生的手性无铅双钙钛矿单晶微线阵列

卤化物双钙钛矿因其巨大的结构兼容性和环境友好性为多功能光电器件提供了一个新的分支，而非线性光学（NLO）器件对于这个迷人的家族来说仍然是空白。同时，单晶钙钛矿微线阵列的精确图案化仍然是 NLO 器件集成的挑战。在此，我们设计了具有非对称结构的无铅手性二维双钙钛矿，呈现出二次谐波（SHG）。此外，使用毛细管-桥限制组装技术制备了具有规则几何、纯取向和高结晶度的钙钛矿单晶阵列。高效的 SHG 源于微线阵列的不对称晶体结构和高结晶度。与它们的多晶薄膜对应物相比，基于微线阵列证明了线性偏振 SHG 和更高的 SHG 转换效率。该结果不仅拓展了无铅双钙钛矿在非线性光学集成领域的应用，而且为无铅光电器件提供了一条可行的途径。

更新日期：2022-08-19

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南