UBIQUITOUS BLUE LUMINESCENCE FROM UNDOPED SYNTHETIC SAPPHIRES

被引：38
作者：
EVANS, BD
机构：
[1] Boeing Defense, Space Group, Seattle
来源：
JOURNAL OF LUMINESCENCE | 1994年 / 60-1卷
关键词：
D O I：
10.1016/0022-2313(94)90233-X
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Undoped, synthetic sapphires grown by four different techniques all showed an anisotropic 5.4 eV (230 nm) absorption and accompanying broad, 3.0 eV (415 nm) luminescence band. A review of the antecedent work, taken together with new spectroscopic evidence from several undoped and titanium-doped samples, treated in both oxidizing and reducing atmospheres, favor assigning these features to a charge transfer transition associated with Ti+4.
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页码：620 / 626
页数：7
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