Photoluminescence and upconversion optical properties of the CaS:Sm3+ nanocrystallites

被引：35

作者：

Gong, X ^{[1
]}

Chen, WJ

Wu, PF

Chan, WK

机构：

[1] Nankai Univ, Inst Modern Opt, Tianjin 300071, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China

[3] Univ Hong Kong, Dept Chem, Hong Kong, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 1998年 / 73卷 / 20期

关键词：

D O I：

10.1063/1.122615

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The CaS:Sm3+ nanocrystallites are synthesized by the modified sol-gel technique. The grain size of the nanocrystallites is approximately 60 nm, which is determined by transmission electron microscopy, x-ray diffraction and UV-vis absorption spectrum. Compared to the CaS:Sm3+ macrocrystallites, the absorption and emission of the nanocrystallites have a blueshift in their spectra, and the emission spectrum of the host CaS appears in the region of 400-500 nm. It was also found that the efficiencies of both photoluminescence and upconversion in the nanocrystallites are higher than those in the macrocrystallites. (C) 1998 American Institute of Physics. [S0003-6951(98)01846-4].

引用

页码：2875 / 2877

页数：3

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