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- Title
CuSbS thin films by heating SbS/Cu layers for PV applications.
- Authors
Ornelas-Acosta, R.; Avellaneda, D.; Shaji, S.; Castillo, G.; Das Roy, T.; Krishnan, B.
- Abstract
In this work, we present the preparation of CuSbS thin films of approximately 850 nm in thickness by heating glass/SbS/Cu layers in low vacuum and their application in PV structures: Glass/SnO:F/n-CdS/p-CuSbS/C/Ag. The SbS thin films were chemically deposited from a solution containing SbCl and NaSO at 40 °C on well cleaned substrates. Copper thin films of 50 nm were thermally evaporated on SbS films of thickness ~600 and 800 nm and the glass/SbS/Cu precursor layers were heated in vacuum at 300 and 350 °C for 1 h. Structural, morphological, optical and electrical characterizations of the annealed thin films were analyzed by X-ray diffraction, Atomic force microscopy, UV-Vis spectrometry and photoresponse measurements. Studies on identification and chemical state of the elements were done using X-ray photoelectron spectroscopy. Photovoltaic devices were prepared using CuSbS thin films as absorber and chemical bath deposited CdS thin films as window layer on FTO coated glass substrates. The photovoltaic parameters of the devices were evaluated from the corresponding J-V curves, yielding J, V and FF values in the range of 1.03-1.55 mA/cm, 250-294 mV and 0.46-0.57 respectively, performed using a solar simulator under illumination of AM1.5 radiation.
- Subjects
COPPER compounds; ANTIMONY sulfides; PHOTOVOLTAIC power generation; EFFECT of temperature on thin films; X-ray diffraction
- Publication
Journal of Materials Science: Materials in Electronics, 2014, Vol 25, Issue 10, p4356
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-014-2173-y