Open AccessEFFECT OF ANNEALING ON THE BANDTAIL STATES IN a-SixC1-x:H FILMS
Author(s) -
Wang Fu-Chao,
Wenru Tang,
Zhiyuan Li,
Xuechu Shen
Publication year - 1989
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.38.76
Subject(s) - annealing (glass) , exponential function , photoluminescence , materials science , spectral line , activation energy , condensed matter physics , thermodynamics , atomic physics , physics , chemistry , quantum mechanics , mathematics , composite material , optoelectronics , mathematical analysis
Photoluminescence (PL) spectra of annealed a-SixC1-x:H films were studied. The-widths of the exponential bandtails were determined by means of the temperature dependences of PL peak energy positions. The experimental results shows that PL peak energy positions shift towards the lower energy with annealing temperature increasing. The bandtail widths have been calculated according to the exponential bandtail model, the calculation shows that the bandtails contract with increase of annealing temperature. A discussion about the results has been given.