Facile Fabrication of Highly Stable and Wavelength-Tunable Tin Based Perovskite Materials with Enhanced Quantum Yield via the Cation Transformation Reaction

Jia Ming Meng, Zhi Xian Yang, Shivaraj B. Patil, Jou Chun Lin, Chen Hao Yeh, Yi Chia Chen, Chih Wen Pao, Jeng Lung Chen, Wun Yu Chen, Chin Wei Lu, Tsung Rong Kuo, Di Yan Wang

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Metal halide perovskites have attracted great attention for their superior light energy conversion applications. Herein, we demonstrated a facile synthesis of zero-dimensional Sn2+perovskite Cs4-xMxSnBr6(M = K+and Rb+) material through the cation transformation reaction at room temperature. Cs4SnBr6NCs was mixed with pure metal bromide salts (KBr and RbBr) via the mechanochemical process to successfully synthesize Cs4-xMxSnBr6perovskite where transformation of Cs to mixed Cs/Rb and mixed Cs/K was achieved. By substituting different cations, the bright fluorescence of the Cs4-xMxSnBr6was tuned from dim green to greenish-cyan while achieving the photoluminescence (PL) quantum yield of ∼39%. The crystal structure of Sn based perovskite with the substitution of K+or Rb+cations was determined by X-ray diffraction (XRD). Moreover, the Cs4-xMxSnBr6demonstrated superior air stability and exhibited a better photocatalytic activity for CO2reduction reaction (CO2RR) with high selectivity of CH4gas with a higher yield rate compared to the pristine Cs4SnBr6NCs.

Original languageEnglish
Pages (from-to)8763-8769
Number of pages7
JournalJournal of Physical Chemistry Letters
Volume12
Issue number36
DOIs
Publication statusPublished - Sep 16 2021

ASJC Scopus subject areas

  • Materials Science(all)
  • Physical and Theoretical Chemistry

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