SANS and TEM investigation of laser-synthesized photoluminescent Si nanoparticles

被引：0
|
作者：
S. Botti
R. Coppola
F. Gourbilleau
R.P. May
R. Rizk
M. Valli
机构：
[1] ENEA-Frascati,
[2] FIS,undefined
[3] CP 2400,undefined
[4] 00100 Roma,undefined
[5] Italy,undefined
[6] ENEA-Casaccia,undefined
[7] FIS,undefined
[8] CP 2400,undefined
[9] 00100 Roma Italy,undefined
[10] LERMAT,undefined
[11] ISMRA,undefined
[12] 14050 Caen,undefined
[13] France,undefined
[14] Institut Max von Laue Paul Langevin,undefined
[15] 156 X,undefined
[16] 38042 Grenoble,undefined
[17] France,undefined
[18] ENEA-Bologna,undefined
[19] FIS,undefined
[20] V. Don Fiammelli 2,undefined
[21] 40128 Bologna,undefined
[22] Italy,undefined
来源：
Applied Physics A | 2002年 / 74卷
关键词：
PACS: 61.12.Ex; 61.46;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Laser-synthesized photoluminescent Si nanopowders, of interest for application in optoelectronics, have been studied by small-angle neutron scattering (SANS) and transmission electron microscopy (TEM) to characterize their size-distribution function, which correlates with emission spectra and optical performances. The SANS measurements were carried out over a wide Q-range by using the D22 instrument at ILL. The analysis of the size distributions obtained from the SANS data reveals that the microstructure of such powders includes particles as large as those observed by TEM (30–200 Å in diameter) and a distribution of tiny inhomogeneities (5–10 Å in diameter), possibly micropores, which can have relevant consequences on material performance.
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页码：s1230 / s1232
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