Open AccessExperimental studies on the electronic structure of pyrite FeS2 films prepared by thermally sulfurizing iron films
Author(s) -
Hui Zhang,
Baoyi Wang,
Rengang Zhang,
Zhe Zhang,
Qian Haijie,
Run Su,
Kui Re-Xi,
Long Wei
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.2482
Subject(s) - materials science , fermi level , band gap , valence (chemistry) , pyrite , density of states , absorption edge , electronic structure , sputter deposition , absorption spectroscopy , octahedron , condensed matter physics , crystal structure , sputtering , crystallography , nanotechnology , thin film , chemistry , optics , physics , optoelectronics , metallurgy , organic chemistry , quantum mechanics , electron
Pyrite FeS2 films have been prepared by thermally sulfurizing iron films deposited by magnetron sputtering.The electronic structures were studies by X-ray absorption near edge structure and X-ray photoemission spectrum. The results show that an S 3p valence band with relatively higher intensity compared to the calculation exists in 2—10eV range and a high density below the Fermi level of Fe 3d states were detected.A second gap of 2.8eV in the unoccupied density of states was found above the conduction band which was 2.4eV by experimentally calculation.The difference between t2g and eg which were formed in an octahedral crystal field was computed to be 2.1eV.