Two-dimensional Cs3Sb2Br9 inducing transformation of three-dimensional CsPbBr3 to nanoplates

Wei Shen; Jiayu Jiang; Yanxing He; Zhihua Chen; Yue Qiu; Hao Cui; Yanfeng Chen; Lihui Liu; Gang Cheng; Shufen Chen

doi:10.1039/D4CC00117F

Two-dimensional Cs₃Sb₂Br₉ inducing transformation of three-dimensional CsPbBr₃ to nanoplates†

Wei Shen,‡*^a Jiayu Jiang,‡^a Yanxing He,^a Zhihua Chen,^a Yue Qiu,^a Hao Cui,^a Yanfeng Chen,

^a Lihui Liu,^a Gang Cheng

^b and Shufen Chen

*^a

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* Corresponding authors

^a State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, People's Republic of China
E-mail: iamwshen@njupt.edu.cn, iamsfchen@njupt.edu.cn

^b State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China

Abstract

This communication describes an effective morphological control strategy involving introducing two-dimensional (2D) Cs₃Sb₂Br₉ to induce a transformation of three-dimensional (3D) CsPbBr₃ to 2D nanoplates (NPLs). By tuning the Sb/Pb ratio, 2D CsPbBr₃ NPLs exhibiting a deep-blue emission centered at a wavelength of 464 nm with an FWHM of 24 nm have been produced. The absence of organic ligands in these high-quality 2D NPLs mitigate the instability issue induced by organic ligand migration and penetration, and these NPLs exhibit 80% of the initial PL intensity after 55 days.

This article is part of the themed collection: Chemical Communications HOT Articles 2024

Chemical Communications

Two-dimensional Cs₃Sb₂Br₉ inducing transformation of three-dimensional CsPbBr₃ to nanoplates†

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Two-dimensional Cs₃Sb₂Br₉ inducing transformation of three-dimensional CsPbBr₃ to nanoplates

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