Light emission from germanium nanoparticles formed by ultraviolet assisted oxidation of silicon‐germanium
作者:
Valentin Craciun,
Chantal Boulmer‐Leborgne,
Edward J. Nicholls,
Ian W. Boyd,
期刊:
Applied Physics Letters
(AIP Available online 1996)
卷期:
Volume 69,
issue 11
页码: 1506-1508
ISSN:0003-6951
年代: 1996
DOI:10.1063/1.117986
出版商: AIP
数据来源: AIP
摘要:
Nanocrystalline Ge particles embedded in a SiO2layer, directly formed by an excision process from a SiGe strained layer during low temperature ultraviolet‐assisted oxidation are shown to exhibit visible photoluminescence. The emission maxima of the photoluminescence spectra are situated at around 2.18 eV, a value that corresponds, according to recent data to an average particle size of 5 nm, in excellent agreement with our previous Raman and transmission electron microscopy measurements of particle size. It is proposed that stress effects associated with the oxidation of small spherical particles allow the formed nanocrystalline Ge to survive during prolonged ultraviolet oxidation of the SiGe layer. ©1996 American Institute of Physics.
点击下载:
PDF
(110KB)
返 回