Cyan-green-emitting Ca3Sc2Si3O12:Ce3+ transparent ceramics: A promising color converter for high-brightness laser lighting

Huajun Wu; Hao Wu; Guo-Hui Pan; Liangliang Zhang; Zhendong Hao; Jiahua Zhang

doi:10.26599/JAC.2023.9220782

Journal of Advanced Ceramics 2023, 12(9): 1731-1741 https://doi.org/10.26599/JAC.2023.9220782

Research Article |

Open Access | Issue | Published: 01 September 2023

Cyan-green-emitting Ca₃Sc₂Si₃O₁₂:Ce³⁺ transparent ceramics: A promising color converter for high-brightness laser lighting

Show Author's Information Hide Author's Information Huajun Wu^{^a}, Hao Wu^{^a}, Guo-Hui Pan^{^a}, Liangliang Zhang^{^a}, Zhendong Hao^{^a}(

), Jiahua Zhang^{^a^,^b}(

)

aState Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

bCenter of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Keywords:

transparent ceramics, color converter, laser lighting, garnet, Ca₃Sc₂Si₃O₁₂ (CSS)

Cite this article:

Wu H, Wu H, Pan G-H, et al. Cyan-green-emitting Ca₃Sc₂Si₃O₁₂:Ce³⁺ transparent ceramics: A promising color converter for high-brightness laser lighting. Journal of Advanced Ceramics, 2023, 12(9): 1731-1741. https://doi.org/10.26599/JAC.2023.9220782

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Abstract Full text Electronic supplementary material About this article

Abstract

Transparent phosphor ceramics have received increasing attention for high-brightness laser lighting, but commercially available phosphor ceramics are currently mainly limited to yellow YAG:Ce and green LuAG:Ce garnets, leaving a "cyan cavity" which is an obstacle to realizing full-color lighting. Achieving new phosphor ceramics capable of filling the cavity is a challenge. Herein, for the first time, cyan-green-emitting Ca₃Sc₂Si₃O₁₂:Ce³⁺ (CSS:Ce) transparent ceramics have been successfully developed by two-step sintering technique under vacuum. The as-prepared CSS:Ce ceramics present high relative density of 99.7% and optical transmittance of 71% in the cyan-green spectral region. It exhibits an efficient band emission peaking at 504 nm (under 450 nm excitation) with internal/external quantum efficiency of 91%/62%. Furthermore, it has excellent thermal stability with a thermal quenching temperature (T_0.5) of 838 K, approximately 100 K higher than that of LuAG:Ce ceramics (738 K). In addition, the CSS:Ce ceramics can withstand blue laser density of 45.6 W/mm² and meanwhile generates cyan-green light with a forward luminous flux of 813 lm and forward luminous efficacy of 162 lm/W. The CSS:Ce transparent ceramics exhibit excellent luminescence performance comparable to the commercial LuAG:Ce ceramics and could be a highly promising color converter for high-brightness laser lighting.

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About this article

Cyan-green-emitting Ca₃Sc₂Si₃O₁₂:Ce³⁺ transparent ceramics: A promising color converter for high-brightness laser lighting

Show Author's information Hide Author's Information Huajun Wu^{^a}, Hao Wu^{^a}, Guo-Hui Pan^{^a}, Liangliang Zhang^{^a}, Zhendong Hao^{^a}(

), Jiahua Zhang^{^a^,^b}(

)

aState Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

bCenter of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Abstract

Keywords: transparent ceramics, color converter, laser lighting, garnet, Ca₃Sc₂Si₃O₁₂ (CSS)

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Publication history

Received: 05 May 2023

Revised: 08 June 2023

Accepted: 24 June 2023

Published: 01 September 2023

Issue date: September 2023

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Acknowledgements

This work was partially supported by National Natural Science Foundation of China (Grant Nos. U22A20139, 52102192, 51772286, 11974346, 12074373, 52072361, and 12074374), National Key R&D Program of China (Grant No. 2021YFB3502701), Youth Innovation Promotion Association CAS (Grant No. 2020222), Key Research and Development Program of Jilin Province (Grant Nos. 20210201024GX, 20220101208JC, and 20230101123JC), Changchun Science and Technology Planning Project (Grant No. 21ZGY05), and the Opening Project Key Laboratory of Transparent Opto-functional Inorganic Material, Chinese Academy of Sciences.

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