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Color-Tunable CsCdCl 3 Perovskite for Low-Temperature Anticounterfeiting and Information Storage Applications.

Xue HaoTing WangXuanyu ZhuLihui HouLin NieHaozhe LiuYang YueXin AnQingshan HeXue Yu
Published in: Inorganic chemistry (2024)
Low-temperature anticounterfeiting technologies play a crucial role in ensuring the authenticity and integrity of temperature-sensitive products such as vaccines, pharmaceuticals, and food items. In this work, a low-temperature anticounterfeiting route based on the differentiated photoluminescence (PL), PersL, and thermally stimulated luminescence (TSL) behaviors of metal halide perovskite, pure CsCdCl 3 , and CsCdCl 3 :10% Te 4+ is proposed. The CsCdCl 3 host exhibits pronounced color shifts, encompassing PL, PersL, and TSL behaviors, ranging from blue to yellow and orange as the temperature rises from 100 K to room temperature. This color change is attributed to a change in the luminous center (from the D 3d octahedron to the C 3v octahedron). Conversely, the addition of Te 4+ as the luminescence center inhibits the matrix emission, maintains the characteristic orange emission of Te 4+ , and regulates the trap distribution of the matrix at low temperature and the TL luminescence intensity. This work highlights the significant promise of CsCdCl 3 :10% Te 4+ and CsCdCl 3 phosphors as innovative low-temperature anticounterfeiting technologies, especially for cold-chain vaccine safety monitoring.
Keyphrases
  • light emitting
  • room temperature
  • energy transfer
  • quantum dots
  • ionic liquid
  • solar cells
  • high efficiency
  • big data
  • risk assessment
  • human health
  • deep learning