Open AccessFormation of Photoluminescent Germanium Nanostructures by Femtosecond Laser Processing on Bulk Germanium: Role of Ambient Gases
Author(s) -
Myung Hwan Seo,
D. S. Kim,
H. S. Kim,
Daegwang Choi,
Sae Chae Jeoung
Publication year - 2006
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.14.004908
Subject(s) - photoluminescence , germanium , materials science , femtosecond , laser , raman spectroscopy , nanostructure , optoelectronics , nanoparticle , optics , irradiation , nanotechnology , silicon , physics , nuclear physics
We present preparation of Ge nanostructures formed using by femtosecond laser pulse and origin of visible photoluminescence (PL) properties. High intensity of incident laser energy gives rise to make oxidized layer to surface of Ge nanoparticle after irradiation. Moreover, size dependent Raman shift and PL spectrums are observed with different fluences and various process surroundings. It is noted that the oxidation of Ge nanoparticle formed ambient surroundings plays an important role of photoluminescence.