Dual Light Emission of CsSnI3-Based Powders Synthesized via a Mechanochemical Process

Huang, Xuan; Tang, Xiaobing; Wen, Xiyu; Lu, Yuebin Charles; Yang, Fuqian

doi:10.3390/ma17143577

Open AccessArticle

Dual Light Emission of CsSnI₃-Based Powders Synthesized via a Mechanochemical Process

by

Xuan Huang

^1,2,

Xiaobing Tang

^1,3,4,

Xiyu Wen

⁵,

Yuebin Charles Lu

^1,2,*

and

Fuqian Yang

^1,3,*

¹

Laboratory of Functional Materials, University of Kentucky, Lexington, KY 40506, USA

²

Department of Mechanical and Aerospace Engineering, University of Kentucky, Lexington, KY 40506, USA

³

Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, USA

⁴

School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

⁵

Center for Aluminium Technology, University of Kentucky, Lexington, KY 40506, USA

^*

Authors to whom correspondence should be addressed.

Materials 2024, 17(14), 3577; https://doi.org/10.3390/ma17143577

Submission received: 13 June 2024 / Revised: 10 July 2024 / Accepted: 15 July 2024 / Published: 19 July 2024

(This article belongs to the Special Issue Design, Synthesis, and Applications of Optoelectronic Functional Materials)

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Abstract

Lead toxicity has hindered the wide applications of lead halide perovskites in optoelectronics and bioimaging. A significant amount of effort has been made to synthesize lead-free halide perovskites as alternatives to lead halide perovskites. In this work, we demonstrate the feasibility of synthesizing CsSnI₃-based powders mechanochemically with dual light emissions under ambient conditions from CsI and SnI₂ powders. The formed CsSnI₃-based powders are divided into CsSnI₃-dominated powders and CsSnI₃-contained powders. Under the excitation of ultraviolet light of 365 nm in wavelength, the CsSnI₃-dominated powders emit green light with a wavelength centered at 540 nm, and the CsSnI₃-contained powders emit orange light with a wavelength centered at 608 nm. Both the CsSnI₃-dominated and CsSnI₃-contained powders exhibit infrared emission with the peak emission wavelengths centered at 916 nm and 925 nm, respectively, under a laser of 785 nm in wavelength. From the absorbance spectra, we obtain bandgaps of 2.32 eV and 2.08 eV for the CsSnI₃-dominated and CsSnI₃-contained powders, respectively. The CsSnI₃-contained powders exhibit the characteristics of thermal quenching and photoelectrical response under white light.

Keywords: mechanochemical synthesis; lead-free perovskites; CsSnI₃; dual light emission

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MDPI and ACS Style

Huang, X.; Tang, X.; Wen, X.; Lu, Y.C.; Yang, F. Dual Light Emission of CsSnI₃-Based Powders Synthesized via a Mechanochemical Process. Materials 2024, 17, 3577. https://doi.org/10.3390/ma17143577

AMA Style

Huang X, Tang X, Wen X, Lu YC, Yang F. Dual Light Emission of CsSnI₃-Based Powders Synthesized via a Mechanochemical Process. Materials. 2024; 17(14):3577. https://doi.org/10.3390/ma17143577

Chicago/Turabian Style

Huang, Xuan, Xiaobing Tang, Xiyu Wen, Yuebin Charles Lu, and Fuqian Yang. 2024. "Dual Light Emission of CsSnI₃-Based Powders Synthesized via a Mechanochemical Process" Materials 17, no. 14: 3577. https://doi.org/10.3390/ma17143577

APA Style

Huang, X., Tang, X., Wen, X., Lu, Y. C., & Yang, F. (2024). Dual Light Emission of CsSnI₃-Based Powders Synthesized via a Mechanochemical Process. Materials, 17(14), 3577. https://doi.org/10.3390/ma17143577

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Dual Light Emission of CsSnI₃-Based Powders Synthesized via a Mechanochemical Process

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