Blue, green, and red emission from undoped and doped ZnGa2O4 colloidal nanocrystals

被引：40

作者：

Byun, Ho-June ^{[1
]}

Kim, Jong-Uk ^{[1
]}

Yang, Heesun ^{[1
]}

机构：

[1] Hongik Univ, Dept Mat Sci & Engn, Seoul 121791, South Korea

来源：

NANOTECHNOLOGY | 2009年 / 20卷 / 49期

关键词：

ONE-POT SYNTHESIS; OPTICAL-PROPERTIES; EU; LUMINESCENCE; PHOSPHORS; GROWTH; TB;

D O I：

10.1088/0957-4484/20/49/495602

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Undoped, Tb3+- and Eu3+-doped ZnGa2O4 colloidal nanocrystals were synthesized by a nonhydrolytic hot solution chemistry. Undoped nanocrystals exhibited an intrinsic blue emission peaking at 437 nm by self-activated transition. The emissions of Tb3+- and Eu3+-doped ZnGa2O4 nanocrystals consisted of their own characteristic green and red line peaks (D-5(4)-F-7(j) transitions), respectively. Synthetic parameters such as activator concentration and reaction time were varied to investigate their effects on luminescent properties. Tb3+-doped colloidal nanocrystals synthesized for a short reaction time showed an unprecedented, exclusively green luminescence with the host blue emission effectively suppressed. On the other hand, the emission of Eu3+-doped ones was weak with the host emission persistently present regardless of reaction time.

引用

页数：6

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