CuIn1-xAlxSe2 Solar Cells Fabricated on the Flexible Substrates by CoSputtering and Modified Selenization

Murali, Banavoth and Krupanidhi, SB (2013) CuIn1-xAlxSe2 Solar Cells Fabricated on the Flexible Substrates by CoSputtering and Modified Selenization. In: 39th IEEE Photovoltaic Specialists Conference (PVSC), JUN 16-21, 2013, Tampa, FL, pp. 2011-2016.

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Abstract

CuIn1-xAlxSe2 (CIAS) thin films were grown on the flexible stainless steel substrates, by de co-sputtering from the elemental cathodes. CuInAl alloyed precursor films were selenized both by noble gas assisted Se vapor transport and vacuum evaporation of Se. X-ray diffraction, scanning electron microscopy and UV-visible absorption spectroscopy were used to characterize the selenized films The composition (x=Al/Al+In) with 0 <= x <= 0.65 was varied by substituting Al with indium in CuInSe2. Lattice parameters, average crystallite sizes and compact density of the films compared to CuInSe2, decreased and (112) peak shifted to higher Bragg's angle, with Al incorporation. Cells were fabricated with the device structure SS/Mo/CIAS/CdS/iZno-AZO/Al. Best cell showed the efficiency of 6.8%, with x=0.13, Eg=1.17 eV, fill factor 45.04, short circuit current density J 30 mA/cm(2).

Item Type:	Conference Proceedings
Series.:	IEEE Photovoltaic Specialists Conference
Publisher:	IEEE
Additional Information:	Copy right for this article belongs to the IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Keywords:	Inorganic materials; Instruments; photovoltaic cells; Sputtering; Thin films
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	25 Sep 2014 06:03
Last Modified:	25 Sep 2014 06:03
URI:	http://eprints.iisc.ac.in/id/eprint/49951

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