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Temperature-controlled tunable emission of Bi3+-doped Rb2SnCl6 all-inorganic vacancy ordered lead-free perovskite for advanced anticounterfeiting.
- Source :
- Dalton Transactions: An International Journal of Inorganic Chemistry; 3/7/2024, Vol. 53 Issue 9, p4243-4250, 8p
- Publication Year :
- 2024
-
Abstract
- At present, tuning the luminescence characteristics of phosphors by external physical stimuli such as temperature and pressure has attracted the interest of researchers. However, the emission-tunable luminescence processes by temperature or pressure in lead-free perovskite with ordered vacancy materials have not been systematically studied. In this study, Bi<superscript>3+</superscript>-doped Rb<subscript>2</subscript>SnCl<subscript>6</subscript> crystals were successfully synthesized using a simple precipitation method, and these crystals demonstrated a remarkable enhancement of luminescence intensity compared with the unannealed ones at 140–200 °C, and with a red-shift in the emission peak from 450 to 500 nm. It was found that the annealing treatment increased the Bi–Cl bond length leading to emission red-shift and achieved the change in the emission intensity due to the band gap modulation of the material. Furthermore, a candidate material for the color-changing optical security strategies was obtained by combining the Bi<superscript>3+</superscript>-doped Rb<subscript>2</subscript>SnCl<subscript>6</subscript> phosphor and printing ink. This work is a valuable reference for the rational design of luminescent perovskites with promising new functionalities and stimulates the great potential of luminescent perovskites in developing promising phosphors for advanced anticounterfeiting. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 53
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Dalton Transactions: An International Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 175676285
- Full Text :
- https://doi.org/10.1039/d3dt04137a