Fabrication and optical properties of divalent Cu2+ ions incorporated Ce:YAG transparent ceramics for white LEDs

Ma, Yuelong1,2; Zhang, Le2,3; Zhang, Lei3; Zhou, Tianyuan2; Jiang, Zhigang1; Sun, Bingheng2; Yao, Qing1; Chen, Hao2; Wang, Yun1

2019-03

10.1016/j.ceramint.2018.11.177

CERAMICS INTERNATIONAL   影响因子和分区

0272-8842

1873-3956

Transparent Ce:YAG ceramics via Cu2+ incorporating annealed at 1450 degrees C were successfully fabricated by the solid-state method to probe their potential applications in white light-emitting diodes (LEDs). The influence of Cu2+ concentration on the microstructure and optical properties of the Ce:YAG transparent ceramics were systematically investigated. The as-prepared ceramics possessed clean grain boundaries and homogeneous grain size distribution ranging from 3.7 to 6.5 mu m. With the addition amount of Cu2+ increased, the red component of ceramics gradually increased and then decreased, it reached a maximum of 13.0% at 1.5 at% Cu2+ incorporation. By combining with commercially blue LED chips (465 nm) directly, the obtained optimal chromaticity coordinates (CIE) and correlated color temperature (CCT) of ceramics were (x = 0.3335, y = 0.3412) and 5450 K, respectively, while its color render index (CRI) was nearly 70 at the thickness of 1.0 mm. Therefore, this study provided an efficient approach to tailor the luminescence property of Ce:YAG ceramic for white LEDs.

Transparent ceramics Cu2+ concentration Luminescent properties White LEDs

SCI ; EI

英语

通讯

project of aqueous tape for ultra thin layered MLCCs application[GRCK2017042411005977]

Materials Science

Materials Science, Ceramics

WOS:000458228200084

ELSEVIER SCI LTD

20184806160508

Ceramic materials ; Fabrication ; Grain boundaries ; Grain size and shape ; Light emitting diodes ; Luminescence ; Yttrium aluminum garnet

Semiconductor Devices and Integrated Circuits:714.2 ; Light/Optics:741.1 ; Ceramics:812.1

MATERIALS SCIENCE

Web of Science

1.Jiangsu Univ, Sch Mech Engn, Zhenjiang 212013, Peoples R China
2.Jiangsu Normal Univ, Sch Phys & Elect Engn, Jiangsu Key Lab Adv Laser Mat & Devices, Xuzhou 221116, Jiangsu, Peoples R China
3.Southern Univ Sci & Technol, SUSTech Acad Adv Interdisciplinary Studies, Shenzhen 518055, Peoples R China

Ma, Yuelong,Zhang, Le,Zhang, Lei,et al. Fabrication and optical properties of divalent Cu2+ ions incorporated Ce:YAG transparent ceramics for white LEDs[J]. CERAMICS INTERNATIONAL,2019,45(4):4817-4823.

Ma, Yuelong.,Zhang, Le.,Zhang, Lei.,Zhou, Tianyuan.,Jiang, Zhigang.,...&Wang, Yun.(2019).Fabrication and optical properties of divalent Cu2+ ions incorporated Ce:YAG transparent ceramics for white LEDs.CERAMICS INTERNATIONAL,45(4),4817-4823.

Ma, Yuelong,et al."Fabrication and optical properties of divalent Cu2+ ions incorporated Ce:YAG transparent ceramics for white LEDs".CERAMICS INTERNATIONAL 45.4(2019):4817-4823.