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Garcia-Angelmo A.R.,Institute Energias Renovablesuniversidad Nacional Autonoma Of Mexicotemixcomorelos 62580Mexico | Romano-Trujillo R.,Institute Energias Renovablesuniversidad Nacional Autonoma Of Mexicotemixcomorelos 62580Mexico | Campos-Alvarez J.,Institute Energias Renovablesuniversidad Nacional Autonoma Of Mexicotemixcomorelos 62580Mexico | Gomez-Daza O.,Institute Energias Renovablesuniversidad Nacional Autonoma Of Mexicotemixcomorelos 62580Mexico | And 2 more authors.
Physica Status Solidi (A) Applications and Materials Science | Year: 2015

In a solar cell: stainless steel/SnS/CdS/ZnO/ZnO:Al, we report conversion efficiency of 1.28%, open-circuit voltage (Voc) of 0.470V, and short-circuit current density (Jsc) of 6.2mAcm-2, measured on cells of area 1cm2 under standard conditions. The thin film of SnS absorber of 550nm in thickness used in this cell was deposited from a chemical bath. Average crystalline diameter of the material is 24nm, and its X-ray diffraction pattern fits a cubic unit cell with cube edge of 1.159nm. The optical band gap of the material is 1.74eV and its electrical conductivity is 10-6Ω-1cm-1. The mobility-lifetime product of the film was determined as 2×10-7cm2V-1 from photoconductivity measurement. To build the solar cell, a CdS thin film of 50nm in thickness was deposited from a chemical bath on the SnS thin film prepared on the stainless steel substrate. Subsequently, a ZnO film of 180nm and ZnO:Al film of 450nm in thickness were deposited on this CdS defining a solar cell area of 1cm2. This solar cell is stable under concentrated sunlight of 2-16 suns, attaining Voc of 0.6V and Jsc of 35mAcm-2 under 16 suns. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

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