All-Inorganic Copper Halide as a Stable and Self-Absorption-Free X-ray Scintillator.
J Phys Chem Lett
; 11(5): 1873-1880, 2020 Mar 05.
Article
em En
| MEDLINE
| ID: mdl-32040318
ABSTRACT
Lead halide perovskites have recently shown great potential as X-ray scintillators; however, the toxicity of the lead element seriously restricts their applications. Herein we report a new lead-free and self-absorption-free scintillator based on Rb2CuCl3 metal halide. The Rb2CuCl3 exhibits a near-unity photoluminescence quantum yield (99.4%) as well as a long photoluminescence lifetime (11.3 µs). Furthermore, Rb2CuCl3 demonstrates an appreciable light yield of 16â¯600 photons per megaelectronvolt and a large scintillation response with a linear range from 48.6 nGyair s-1 to 15.7 µGyair s-1. Notably, the detection limit is as low as 88.5 nGyair s-1, enabling a reduced radiation dose to the human body when a medical and security check is conducted. In addition, Rb2CuCl3 exhibits good stability against the atmosphere, continuous ultraviolet light, as well as X-ray irradiation. The combination of the decent scintillation performance, low toxicity and good stability suggests the Rb2CuCl3 could be a possible promising X-ray scintillator.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cobre
/
Espectroscopia Fotoeletrônica
Idioma:
En
Revista:
J Phys Chem Lett
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
China