In Situ Solution-Grown Halide Perovskite Single Crystals with Epitaxial Heterojunction Structures for Efficient Photodetection

Yandong Ren, Zining Li, Yu Chen, Haotian Jiang, Yu Zhang, Yuling Wang, Jianbo Hua, Yonghao Liu, Haizheng Zhong

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10 引用 (Scopus)

摘要

In comparison with monocomponent perovskite single crystals, the heterojunctions of perovskite single crystals provide great chances to tune the optoelectronic properties. In this work, we develop an in situ solution growth approach to fabricate perovskite single-crystal heterojunctions with different compositions, which are MAPbCl3@MAPbBr3, CsPbBr3@MAPbBr3, and CsPbBr3@MAPbCl3. It was found that the as-formed gradient interface with mixed halogen components plays an important role in releasing the lattice mismatch for the in situ growth. Benefiting from the quasi-type II-like energy level alignment between MAPbCl3and MAPbBr3single-crystal counterparts, the heterojunction-based device exhibited an enhanced responsivity of 0.28 mA/W and a specific detectivity of over 109Jones under the photovoltaic working mode even with a 1 mm electrode distance. This work provides a facile route to fabricate functional perovskite single crystals with rational design for photodetection applications.

源语言英语
页(从-至)3662-3668
页数7
期刊Crystal Growth and Design
22
6
DOI
出版状态已出版 - 1 6月 2022

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