Ultrathin Two-Dimensional Organic-Inorganic Hybrid Perovskite Nanosheets with Bright, Tunable Photoluminescence and High Stability

Shuang Yang; Wenxin Niu; An-Liang Wang; Zhanxi Fan; Bo Chen; Chaoliang Tan; Qipeng Lu; Hua Zhang

doi:10.1002/anie.201701134

Ultrathin Two-Dimensional Organic-Inorganic Hybrid Perovskite Nanosheets with Bright, Tunable Photoluminescence and High Stability

Angew Chem Int Ed Engl. 2017 Apr 3;56(15):4252-4255. doi: 10.1002/anie.201701134. Epub 2017 Mar 15.

Authors

Shuang Yang¹, Wenxin Niu¹, An-Liang Wang¹, Zhanxi Fan¹, Bo Chen¹, Chaoliang Tan¹, Qipeng Lu¹, Hua Zhang¹

Affiliation

¹ Center for Programmable Materials, School of Materials Science and Engineering, 50 Nanyang Avenue, Singapore, 639798, Singapore.

PMID: 28295961
DOI: 10.1002/anie.201701134

Abstract

Two-dimensional (2D) organic-inorganic hybrid perovskite nanosheets (NSs) are attracting increasing research interest due to their unique properties and promising applications. Here, for the first time, we report the facile synthesis of single- and few-layer free-standing phenylethylammonium lead halide perovskite NSs, that is, (PEA)₂ PbX₄ (PEA=C₈ H₉ NH₃ , X=Cl, Br, I). Importantly, their lateral size can be tuned by changing solvents. Moreover, these ultrathin 2D perovskite NSs exhibit highly efficient and tunable photoluminescence, as well as superior stability. Our study provides a simple and general method for the controlled synthesis of 2D perovskite NSs, which may offer a new avenue for their fundamental studies and optoelectronic applications.

Keywords: organometal halides; perovskites; photoluminescence; stability; two-dimensional nanosheets.

Publication types

Research Support, Non-U.S. Gov't