Open AccessOptical and electrical properties study of sol-gel derived Cu2ZnSnS4 thin films for solar cells
Author(s) -
Bl L. Guo,
Y. H. Chen,
X. J. Liu,
W. C. Liu,
A. D. Li
Publication year - 2014
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4895520
Subject(s) - czts , kesterite , materials science , thin film , annealing (glass) , raman spectroscopy , microstructure , chemical engineering , fabrication , optoelectronics , nanotechnology , composite material , optics , medicine , physics , alternative medicine , engineering , pathology
The fabrication of environmental-friendly Cu2ZnSnS4 (CZTS) thin films with pure kesterite phase is always a challenge to researchers in the field of solar cells. We introduce a simple non-vacuum sol-gel method to fabricate kesterite CZTS films. Ethylenediamine is used as the chelating agent and stabilizer and plays an important role in preparing stable precursor. X-ray diffraction, Raman and scanning electron microscopy studies suggest that the microstructure and optical properties of CZTS films depend strongly on annealing temperatures. The temperature dependence of conductivity of 500 °C annealed CZTS film shows that the Mott law dominates in the low temperature region and thermionic emission is predominant at high temperatures