Photo Curing and Pressureless Sintering of Orange-emitting Glass-ceramics

Li, Qi; Yi, Huang; Qian, Bin; Xu, Beibei; Chen, Liying; Xiao, Wenge; Qiu, Jianrong

doi:10.15541/jim20210518

Journal of Inorganic Materials

2022

DOI: 10.15541/jim20210518

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Photo Curing and Pressureless Sintering of Orange-emitting Glass-ceramics

Qi Li¹,

Huang Yi²,

Bin Qian³

et al.

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Phosphor‐in‐Silica‐Glass: Filling the Gap between Low‐ and High‐Brightness Solid‐State Lightings

Xiao

Zhang

et al. 2022

Laser & Photonics Reviews

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High‐brightness phosphor‐converted solid‐state light (SSL) sources based on blue light‐emitting diodes (LEDs) or laser diodes (LDs) will enable versatile optical applications other than general illumination. However, luminescence ceramics/crystals are too expensive for widespread use, while phosphor‐in‐glass converters suffer from low conversion efficiency at high‐power‐density excitation and poor chemical and thermal stabilities of low‐melting glasses. Herein, an ultrathin interface (<50 nm) is reported in Lu3Al5O12:Ce3+ phosphor‐in‐silica‐glass (LuAG:Ce‐PiSG) despite being sintered at 1250 °C, endowing them with high internal quantum efficiency (>95%) and excellent stabilities. Combined experimental results and first‐principles calculations reveal that the large formation energy of SiAl point defects makes the undesired interfacial reaction between aluminate garnets and silica glass intrinsically suppressed. Phosphor‐converted LEDs/LDs fabricated by LuAG:Ce‐PiSG exhibit high luminous efficiency (195 lm W−1 @ 20 mA) and high brightness (1914 lm @ 13.4 W mm−2), approaching the performances of their ceramic counterparts. The results not only provide a way to balance the brightness and the price for SSL sources but also unleash the potential of silica glass as an inorganic matrix for emerging optical applications.

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Phosphor‐in‐Silica‐Glass: Filling the Gap between Low‐ and High‐Brightness Solid‐State Lightings

Xiao

Zhang

et al. 2022

Laser & Photonics Reviews

Self Cite

View full text Add to dashboard Cite

show abstract

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Photo Curing and Pressureless Sintering of Orange-emitting Glass-ceramics

Cited by 1 publication

References 41 publications

Phosphor‐in‐Silica‐Glass: Filling the Gap between Low‐ and High‐Brightness Solid‐State Lightings

Phosphor‐in‐Silica‐Glass: Filling the Gap between Low‐ and High‐Brightness Solid‐State Lightings

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