Fabrication and Characterization of a Yellow-Emitting BCNO Phosphor for White Light-Emitting Diodes

被引：44

作者：

Kaihatsu, Yutaka ^{[1
]}

Iskandar, Ferry ^{[1
]}

Widiyandari, Hendri ^{[1
,2
]}

Wang, Wei-Ning ^{[1
]}

Okuyama, Kikuo ^{[1
]}

机构：

[1] Hiroshima Univ, Grad Sch Engn, Dept Chem Engn, Higashihiroshima 7398527, Japan

[2] Diponegoro Univ, Fac Math & Nat Sci, Dept Phys, Semarang 50275, Indonesia

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2009年 / 12卷 / 03期

关键词：

BORON-NITRIDE POWDERS; EFFICIENCY; SPECTROSCOPY; CA;

D O I：

10.1149/1.3063063

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A yellow-emitting phosphor comprised of boron, carbon, nitrogen, and oxygen (BCNO) atoms without any rare-earth ions as luminescence centers was successfully synthesized using a facile process at low temperature and atmospheric pressure. The synthesized BCNO powders showed a broad emission spectrum centered at 540 nm under excitation at 460 nm due to the radiation transitions of local (2)Pi(g) -> (1)Sigma(+)(g) luminescence provided in the BO2- species. Further analysis revealed that the BCNO yellow phosphor exhibited a high external quantum efficiency (60%) having a hexagonal-BN crystalline structure mixed with cubic-B2O3. The synthesized yellow-emitting BCNO phosphor is promising for high-efficiency phosphor conversion-based white light-emitting diodes. (C) 2009 The Electrochemical Society. [DOI: 10.1149/1.3063063] All rights reserved.

引用

页码：J33 / J36

页数：4

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