YAGG:Ce transparent ceramics with high luminous efficiency for solid-state lighting application

Hui HUA; Shaowei FENG; Zhongyu OUYANG; Hezhu SHAO; Haiming QIN; Hui DING; Qiping DU; Zhijun ZHANG; Jun JIANG; Haochuan JIANG

doi:10.1007/s40145-019-0321-9

Journal of Advanced Ceramics 2019, 8(3): 389-398 https://doi.org/10.1007/s40145-019-0321-9

Research Article |

Open Access | Issue | Published: 01 August 2019

YAGG:Ce transparent ceramics with high luminous efficiency for solid-state lighting application

Show Author's Information Hide Author's Information Hui HUA^{^a^,^b^,^†}, Shaowei FENG^{^a^,^b^,^†}, Zhongyu OUYANG^{^c}, Hezhu SHAO^{^b}, Haiming QIN^{^b}(

), Hui DING^{^b}, Qiping DU^{^a^,^b}, Zhijun ZHANG^{^a}(

), Jun JIANG^{^b}(

), Haochuan JIANG^{^b}

a School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China

b Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China

c School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China

† These authors contributed equally to this work.

Keywords:

YAGG:Ce transparent ceramics, two-step sintering, Al/Ga ratio, luminous efficiency, green-emitting LEDs

Cite this article:

HUA H, FENG S, OUYANG Z, et al. YAGG:Ce transparent ceramics with high luminous efficiency for solid-state lighting application. Journal of Advanced Ceramics, 2019, 8(3): 389-398. https://doi.org/10.1007/s40145-019-0321-9

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Abstract Full text Electronic supplementary material About this article

Abstract

A series of Y_2.985Al_5-xGa_xO₁₂:0.015Ce (YAGG:Ce, x = 0, 1, 2, 3, 4, 5) transparent ceramics were prepared via a solid-state reaction method. Two-step sintering technique was proved to be an effective approach to prepare functional ceramics with high Ga concentration, and Y₃Ga₅O₁₂ (YGG) transparent ceramic was successfully prepared for the first time. According to the variation of Al/Ga ratio, regulation of band structure and luminescence properties of YAGG:Ce transparent ceramics were effectively investigated. When Ga substitutes Al sites, the tetrahedral site is more favorable compared to the octahedral site for Ga to occupy according to the first-principle calculation. A continuous blue shift of the emission from 565 to 515 nm was achieved as Ga was gradually introduced into Y₃Al₅O₁₂:Ce matrix. High quality green light was obtained by coupling the YAGG:Ce ceramics with commercial blue InGaN chips. Transparent luminescence ceramics accomplished in this work can be quite prospective for high power LED application.

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About this article

YAGG:Ce transparent ceramics with high luminous efficiency for solid-state lighting application

Show Author's information Hide Author's Information Hui HUA^{^a^,^b^,^†}, Shaowei FENG^{^a^,^b^,^†}, Zhongyu OUYANG^{^c}, Hezhu SHAO^{^b}, Haiming QIN^{^b}(

), Hui DING^{^b}, Qiping DU^{^a^,^b}, Zhijun ZHANG^{^a}(

), Jun JIANG^{^b}(

), Haochuan JIANG^{^b}

a School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China

b Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China

c School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China

† These authors contributed equally to this work.

Abstract

Keywords: YAGG:Ce transparent ceramics, two-step sintering, Al/Ga ratio, luminous efficiency, green-emitting LEDs

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Received: 23 November 2018

Revised: 23 January 2019

Accepted: 09 February 2019

Published: 01 August 2019

Issue date: September 2019

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Acknowledgements

This research was supported by the National Key R & D Program of China (2016YFC0101800), National Natural Science Foundation of China (51672286, U1832159, 51772185), and Science and Technology Major Project of Ningbo Municipality (2017C110028).

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