Site occupation and upconversion process enabled multicolor emission in a Gd3GaO6:Bi3+,Er3+ phosphor for quad-mode anti-counterfeiting

Inorg. Chem. Front., 2023, Advance Article
DOI: 10.1039/D3QI01525D, Research Article
Zhijun Li, Zeyu Lyu, Pengcheng Luo, Shuai Wei, Chengyu Zhuo, Dashuai Sun, Sida Shen, Hongpeng You
Enabled by the site occupation dependent emission of Bi3+ and the upconversion process dependent emission of Er3+, quad-mode anti-counterfeiting with four distinguishable images is achieved with only the Gd3GaO6:Bi3+,Er3+ phosphor.
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