Simultaneous improving luminescence intensity and stability, reduce cation vacancies of rare-earth doped CaF <sub>2</sub> by charge self-compensation

Although upconversion rare-earth (RE) materials have excellent luminescence properties, the luminescence intensity and thermal stability of phosphors are not favorable due to RE doping induced vacancies. This work focused on enhancing luminescence intensity and stability of phosphor by charge compensation and 3D printing. The luminescence results showed that Ca<sub>0.697</sub>Yb<sub>0.2</sub>Er<sub>0.0015</sub>Tm<sub>0.0005</sub>F<sub>2</sub> with charge compensation exhibited luminescence intensity 3.2 times higher than that of Ca<sub>0.798</sub>Yb<sub>0.2</sub>Er<sub>0.0015</sub>Tm<sub>0.0005</sub>F<sub>2 </sub>non-charge compensation. The luminescence of resin-coated luminescent materials is still stable after 6 months. The constructed White light-emitting diodes (WLEDs) also exhibit consistent and outstanding color rendering characteristics, with a color rendering index (CRI) of up to 81 and a low color temperature (CCT).

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Publication Details

Journal
Nano Research
Published
2026-01-09
DOI
https://doi.org/10.26599/nr.2026.94908410
Primary Topic
Luminescence Properties of Advanced Materials
Type
article
Field-Weighted Citation Impact
0.00

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article

Simultaneous improving luminescence intensity and stability, reduce cation vacancies of rare-earth doped CaF 2 by charge self-compensation

Yuxin Liu, Zhangong Bai, Guofeng Wang, Ao Xu
Nano Research
Luminescence Properties of Advanced Materials
article

Simultaneous improving luminescence intensity and stability, reduce cation vacancies of rare-earth doped CaF 2 by charge self-compensation

Yuxin Liu, Zhangong Bai, Guofeng Wang, Ao Xu
article en

Abstract

Although upconversion rare-earth (RE) materials have excellent luminescence properties, the luminescence intensity and thermal stability of phosphors are not favorable due to RE doping induced vacancies. This work focused on enhancing luminescence intensity and stability of phosphor by charge compensation and 3D printing. The luminescence results showed that Ca<sub>0.697</sub>Yb<sub>0.2</sub>Er<sub>0.0015</sub>Tm<sub>0.0005</sub>F<sub>2</sub> with charge compensation exhibited luminescence intensity 3.2 times higher than that of Ca<sub>0.798</sub>Yb<sub>0.2</sub>Er<sub>0.0015</sub>Tm<sub>0.0005</sub>F<sub>2 </sub>non-charge compensation. The luminescence of resin-coated luminescent materials is still stable after 6 months. The constructed White light-emitting diodes (WLEDs) also exhibit consistent and outstanding color rendering characteristics, with a color rendering index (CRI) of up to 81 and a low color temperature (CCT).

Nano ResearchVol. 19(4)
National Natural Science Foundation of China
Openalex Percentile: Top 93%
Luminescence Properties of Advanced Materials
DOIOpen Access PDFOpenAlex
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Simultaneous improving luminescence intensity and stability, reduce cation vacancies of rare-earth doped CaF <sub>2</sub> by charge self-compensation — Yuxin Liu, Zhangong Bai, et al. · Nano Research (2026) | TGRS Research Map | TGRS