Zhang T, Liu L, Wang R, Zhang W, Liu X, Yuan C, Hua R. Multi-color luminescence and anticounterfeiting application of upconversion nanoparticle
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RSC Adv 2023;
13:9273-9280. [PMID:
36968048 PMCID:
PMC10031572 DOI:
10.1039/d2ra07308k]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 03/03/2023] [Indexed: 03/24/2023] Open
Abstract
Multi-color luminescence materials are important in the illumination, solid-state three-dimensional display, information storage, biological labelling and anticounterfeiting fields. Herein, we designed a novel core–shell structure upconversion nanoparticle (UCNP) material (NaYF4) with lanthanide ion doping to achieve multi-color luminescence under a single NIR excitation laser. Different from the typical single-sensitizer materials, the core–shell structure utilizes Nd3+, Yb3+, Tm3+ and Er3+ ions to obtain tuning of the color and brightness. The doping of Nd3+ ions enhances the weak color (red) light source to maintain the light color balance. Benefiting from the color adjustment of the sensitizers and the change of the core–shell coating, bright-white emission and flexible color emission from red to green, cyan and blue can be achieved via the diverse doped rare earth ions in a single UCNP under continuous-wave laser excitation (980 nm). Simultaneously, the emission color of the UCNPs can change with the intensity of the excitation light source and the wavelength. The bright-white emission can be used for lighting displays, and the flexible full-color emission can be applied in the anticounterfeiting and information storage fields.
Quadruply doped (Nd3+, Tm3+, Er3+ and Yb3+) core–shell structure NaYF4 UCNPs achieve multi-color luminescence based on a single material under 980 nm excitation. Their applicability to anticounterfeiting and information storage has been verified.![]()
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