背光
材料科学
荧光粉
激光器
发光效率
赛隆
饱和(图论)
光电子学
光学
量子效率
激光功率缩放
光通量
功率密度
色域
发光
液晶显示器
复合材料
图层(电子)
功率(物理)
陶瓷
物理
组合数学
量子力学
数学
光源
作者
Jian Xu,Jiang Zhi,Wen-ju Gu,Xinrong Chen,Shiqing Pang,Baofu Hu,Baoli Du,Peng Xu,Carsten Dam‐Hansen,Ole Bjarlin Jensen
摘要
β-Si6−zAlzOzN8−z:Eu2+ (β-SiAlON:Eu) possesses an intense and narrow emission band peaked at ∼530 nm, which makes it a highly suitable green-emitting phosphor for LCD backlight. However, it can hardly be used in high-power laser displays or projectors because of the laser-induced saturation effect. The aim of the present study is to develop a β-SiAlON:Eu based phosphor-in-glass (PiG) film that can withstand high-power density laser irradiation. A facile blade-coating method was employed to fabricate the PiG film. The morphology, quantum efficiency, luminescence spectra, and laser-pumped colorimetric properties of the β-SiAlON:Eu PiG films were investigated. Under excitation of 450 nm, a typical PiG film showed internal quantum efficiency of 58%, which is an acceptable value. The laser-pumped photometric properties of the PiG films were measured in reflection mode. When irradiated with a blue laser, the PiG film attained a high luminous efficacy of 109 lm/W. Furthermore, its saturation threshold reached over 26.4 W/mm2, thus achieving a high lumen density of 1970 lm/mm2 and a high luminous exitance of 1052 lm/mm2. With the above excellent properties, the β-SiAlON:Eu PiG film has great potential for use in high-power and wide-color gamut laser displays or projectors.
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