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Excitation wavelength-dependent tunable color Te4+-doped Cs2ZrCl6 vacancy-ordered perovskites for optical anti-counterfeiting.
- Source :
- New Journal of Chemistry; 7/21/2024, Vol. 48 Issue 27, p12342-12347, 6p
- Publication Year :
- 2024
-
Abstract
- Te<superscript>4+</superscript>-doped Cs<subscript>2</subscript>ZrCl<subscript>6</subscript> vacancy-ordered perovskites with excitation wavelength-dependent tunable color have been synthesised by a simple precipitation method at room temperature, with two luminescent centres originating from the Te<superscript>4+</superscript> and the STE (self-trapping exciton) of the Cs<subscript>2</subscript>ZrCl<subscript>6</subscript> itself, respectively. They exhibit two different emission characteristics at 254 nm and 365 nm excitation wavelengths. At an excitation wavelength of 254 nm, the emission characteristics allow Te<superscript>4+</superscript>-doped Cs<subscript>2</subscript>ZrCl<subscript>6</subscript> to exhibit tunable emission from blue to white to yellow under the control of Te<superscript>4+</superscript> doping. And the excitation wavelength of 365 nm shows yellow emission. Te<superscript>4+</superscript> doped Cs<subscript>2</subscript>ZrCl<subscript>6</subscript> phosphors were used for optical anti-counterfeiting, and the anti-counterfeiting patterns were well distinguished under 254 nm and 365 nm UV lamps, demonstrating the potential of this excitation wavelength-dependent tunable color material for optical anti-counterfeiting applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 11440546
- Volume :
- 48
- Issue :
- 27
- Database :
- Complementary Index
- Journal :
- New Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 178314018
- Full Text :
- https://doi.org/10.1039/d4nj01645a