Issue 1, 2024

Excitation-dependent efficient photoluminescence in an organic–inorganic (C4H12N)2HfCl6 perovskite induced by antimony doping

Abstract

Organic–inorganic lead (Pb)-free halide perovskites exhibit considerable potential as photoluminescence materials because of outstanding photophysical properties. However, metal halide perovskites generally emit single self-trapped excitons at room temperature, making it difficult to achieve a wide color gamut using simple external stimuli. Herein, a novel antimony (Sb)-doped hafnium (Hf(IV))-based metal halide hybrid (TMA)2HfCl6 (TMA = C4H12N) with efficient and remarkable excitation-dependent luminescence is reported. The prepared (TMA)2HfCl6 samples exhibit two different types of emissions under varying excitation lengths that originate from free excitons and self-trapped excitons. The emissions range from red to white light and can be tuned through precise control of the excitation wavelength. The Pb-free metal halide (TMA)2HfCl6:Sb3+ exhibits a high photoluminescence quantum yield of 85.55% upon 365 nm ultraviolet excitation and excellent air stability, which are unique advantages for a light-emitting material. These results provide fundamental insights into the color kinetic features of Sb3+ in hybrid metal halides, offering guidance for expanding the application scope of luminescent metal halides.

Graphical abstract: Excitation-dependent efficient photoluminescence in an organic–inorganic (C4H12N)2HfCl6 perovskite induced by antimony doping

Supplementary files

Article information

Article type
Research Article
Submitted
15 Way 2023
Accepted
30 Dit 2023
First published
06 Xim 2023

Mater. Chem. Front., 2024,8, 274-281

Excitation-dependent efficient photoluminescence in an organic–inorganic (C4H12N)2HfCl6 perovskite induced by antimony doping

J. Nie, X. Yun, Z. Liu, H. Zhou, H. Hu, H. Zhong, Y. Shi and H. Li, Mater. Chem. Front., 2024, 8, 274 DOI: 10.1039/D3QM01015E

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