https://doi.org/10.1051/epjap/2009006
The study of properties of CdTe thin films deposited in Ar/O2 atmosphere*
College of Materials Science and Engineering, Sichuan University,
610064 Chengdu, P.R. China
Corresponding author: libing70@126.com
Received:
29
September
2008
Accepted:
4
December
2008
Published online:
31
January
2009
The preparation and properties of CdTe thin films is of a primary interest for the CdTe thin film solar cells in both research and technology. In our work, polycrystalline CdTe thin films were deposited on pretreated glass substrates in Ar/O2 atmosphere by closed-space sublimation (CSS) technology. Structural property was studied by X-ray diffraction (XRD), surface morphology was observed by scanning electron microscopy (SEM). The optical and electrical properties of CdTe films were investigated, as well as the effects of deposition temperatures, the ratio of gas (Ar/O2) and post-treatment on the properties. The high quality CdTe layer was prepared based on the above studies. These layers were used to prepared CdS/CdTe/ZnTe:Cu solar cells. Efficiency of 13.38% and fill factor of 70.3% (0.501 cm2 area) for CdTe solar cells have been achieved.
PACS: 68.35.Ct – Interface structure and roughness / 78.20.-e – Optical properties of bulk materials and thin films / 73.61.-r – Electrical properties of specific thin films
© EDP Sciences, 2009
