High-security anti-counterfeiting through upconversion luminescence
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
Original language | English |
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Article number | 100520 |
Journal / Publication | Materials Today Physics |
Volume | 21 |
Online published | 8 Sept 2021 |
Publication status | Published - Nov 2021 |
Link(s)
Abstract
Upconversion luminescence is characterized by the conversion of near-infrared excitation into ultraviolet and visible emissions through a special class of doped optical materials. Recent advances in chemical synthesis have enabled the precise incorporation of multiple dopant ions into a single substrate of well-controlled size and morphology, which render emissions with distinguishable spectroscopic fingerprints as well as spatially and temporally resolved features. These luminescence characteristics hold great promise in anti-counterfeiting applications by encoding high-capacity optical codes. In this review, we focus on recent advances in anti-counterfeiting technology that exploits the remarkable tunability of upconversion luminescence to design optical codes with high-level security. We discuss various approaches for the design of upconversion materials and construction of upconversion codes, along with an analysis of future challenges for upconversion-based anti-counterfeiting. (C) 2021 Elsevier Ltd. All rights reserved.
Research Area(s)
- Upconversion, Multicolor emission, Anti-Counterfeiting, Optical multiplexing, ENERGY MIGRATION, NANOPARTICLES, ENHANCEMENT, NANOSTRUCTURE, DESIGN, LIGHT
Citation Format(s)
High-security anti-counterfeiting through upconversion luminescence. / Suo, Hao; Zhu, Qi; Zhang, Xin et al.
In: Materials Today Physics, Vol. 21, 100520, 11.2021.
In: Materials Today Physics, Vol. 21, 100520, 11.2021.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review