SANS and TEM investigation of laser-synthesized photoluminescent Si nanoparticles

被引:7
作者
Botti, S
Coppola, R
Gourbilleau, E
May, RP
Rizk, R
Valli, M
机构
[1] ENEA Frascati, FIS, I-00100 Rome, Italy
[2] ENEA Casaccia, FIS, I-00100 Rome, Italy
[3] ISMRA Univ Caen, LERMAT, F-14050 Caen, France
[4] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
[5] ENEA Bologna, FIS, I-40128 Bologna, Italy
来源
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2002年 / 74卷 / Suppl 1期
关键词
D O I
10.1007/s003390201712
中图分类号
T [工业技术];
学科分类号
08 ;
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 Angstrom in diameter) and a distribution of tiny inhomogeneities (5-10 Angstrom in diameter), possibly micropores, which can have relevant consequences on material performance.
引用
收藏
页码:S1230 / S1232
页数:3
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