Properties of SiAlON powder phosphors for white LEDs

详细信息	查看全文 | 推荐本文 |

• 作者：Suzuya Yamada^a ; ^{suzuya-yamada@denka.co.jp} ; Hideyuki Emoto^a ; Masahiro Ibukiyama^a ; Naoto Hirosaki^b
• 关键词：SiAlON ; Optical property ; Phosphor
• 刊名：Journal of the European Ceramic Society
• 出版年：2012
• 期刊代码：53_09552219
• 类别：ms
• 出版时间：June, 2012
• 卷：32
• 期：7
• 页码：1355-1358
• 文件大小：336 K

摘要

Three kinds of Eu²⁺-doped oxynitride powder phosphors, including green 尾-SiAlON, yellow Ca-伪-SiAlON and newly developed orange Ca-伪-SiAlON were prepared by gas pressure sintering, which emit the fluorescent light with emission peak at 540 nm, 585 nm and 597 nm, respectively. Emission intensity more than 90%can be kept in the range of temperature from 30 掳C to 200 掳C. Emission characteristics are stable after long-term exposure testing for 6000 h at temperature of 85 掳C and in humidity of 85%. A white LED device composed of a blue LED chip, 尾-SiAlON and orange Ca-伪-SiAlON phosphors exhibits a modest colour rendering index of 72.