Perovskite-Based Nanostructures for Fluorescence Afterglow Anticounterfeiting
Source abstract
Abstract
Advanced fluorescence anti-counterfeiting technology has attracted the attention of researchers and encourages people to develop more materials with more colors and functions. Here, in order to achieve a full-band afterglow in the visible light region, we designed a composite CsPbI 3 -CsPbBr 3 /Sr 2 MgSi 2 O 7:Eu 2+,Dy 3+ @SiO 2, which is composed of nanoscale all-inorganic cesium lead perovskite quantum dots (PQDs) and long-afterglow luminescent materials Sr 2 MgSi 2 O 7:Eu 2+,Dy 3+ (SMS). SMS is used to store light energy, and PQDs are used to control afterglow emission colors; through their energy transfer, the afterglow colors can be adjusted in the visible region. SiO 2 is used as the coating material to improve the temporary stability of the nanocomposite. The composite mixed with oleic acid (OA) can be used as a dye, which exhibits different emitting colors and afterglow colors under different excitation environments. This research provided an idea for using long-afterglow luminescent materials and PQDs in the field of fluorescence anti-counterfeiting by double anti-counterfeiting of fluorescence and afterglow.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Perovskite Materials and Applications · Luminescence Properties of Advanced Materials · Luminescence and Fluorescent Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi’an 710021, China
Funding
Shaanxi University of Science and Technology · Natural Science Foundation of Shaanxi Province
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