Luminescence and absorption of hybrid xerogels doped with PbS nanoparticles prepared by gas diffusion method

被引：4
|
作者：
Gonçalves, J. T. [1 ]
Boev, V. I.
Solovyev, A.
Silva, C. J. R.
Gomes, M. J. M.
机构：
[1] Univ Minho, Dept Quim, P-710057 Braga, Portugal
[2] Univ Minho, Ctr Fis, P-4710057 Braga, Portugal
来源：
ADVANCED MATERIALS FORUM III, PTS 1 AND 2 | 2006年 / 514-516卷
关键词：
PbS; nanoparticles; ureasil; gas diffusion method; photoluminescence;
D O I：
10.4028/www.scientific.net/MSF.514-516.1221
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Transparent hybrid organic-inorganic ureasil xerogels with embedded PbS nanoparticles were prepared by exposing the xerogels doped with lead (11) nitrate to hydrogen sulphide atmosphere. Absorbance spectrum of the nonocomposites showed well defined peaks at 560 nm and 370 nm attributed to 1s(v) - 1s(c) and 1s(v) - 2p(c) exciton transitions, respectively. After four days of thermal treatment at 50 degrees C under argon atmosphere the obtained materials showed enhanced photoluminescence response in the near infra-red region.
引用
收藏
页码：1221 / 1224
页数：4
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