Optical properties of Eu2+ in α-SiAION

被引：261

作者：

Xie, RJ

Hirosaki, N

Mitomo, M

Yamamoto, Y

Suehiro, T

Sakuma, K

机构：

[1] Natl Inst Mat Sci, Adv Mat Lab, Tsukuba, Ibaraki 3050044, Japan

[2] Fujikura Ltd, Opt Commun Technol Dept, Sakura, Chiba 2858550, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2004年 / 108卷 / 32期

关键词：

D O I：

10.1021/jp048295g

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

New interesting alpha-SiAlON:Eu-based yellow oxynitride phosphors with the formula (CaxEuy)Si12-2x-3yAl2x+3yOyN16-y (x = 0.2-2.2, y = 0-0.25) have been prepared, and the effects of the activator concentration and the overall composition of the host lattice on optical properties have been investigated. It has been demonstrated that the Eu2+-doped alpha-SiAlON phosphors absorb strongly in the UV-visible part of the electromagnetic spectrum and exhibit an intense emission band with peaks at 583-605 nm. We have shown that the optical properties depend greatly on the Eu2+ concentration and the overall composition of the host lattice. The results indicate a concentration quenching effect at y greater than or equal to 0.075 and a systematic red-shift in emission wavelength as the Ca2+ or the Eu2+ concentration increases.

引用

页码：12027 / 12031

页数：5

共 18 条

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