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Please use this identifier to cite or link to this item: http://purl.org/purl/4722

Title: CuInS2/In2S3 Cells using a Cost-effective Technique: Significance of Precursor Ratios on Cell Parameters
Authors: Sudha Kartha, C
Vijayakumar, K P
Angel, Susan Cherian
Abe, T
Kashiwaba, Y
Keywords: Semiconductors
thin films
solar cells
chemical spray pyrolysis
Issue Date: 2012
Publisher: Elsevier
Abstract: Thin film solar cells having structure CuInS2/In2S3 were fabricated using chemical spray pyrolysis (CSP) technique over ITO coated glass. Top electrode was silver film (area 0.05 cm2). Cu/In ratio and S/Cu in the precursor solution for CuInS2 were fixed as 1.2 and 5 respectively. In/S ratio in the precursor solution for In2S3 was fixed as 1.2/8. An efficiency of 0.6% (fill factor -37.6%) was obtained. Cu diffusion to the In2S3 layer, which deteriorates junction properties, is inevitable in CuInS2/In2S3 cell. So to decrease this effect and to ensure a Cu-free In2S3 layer at the top of the cell, Cu/In ratio was reduced to 1. Then a remarkable increase in short circuit current density was occurred from 3 mA/cm2 to 14.8 mA/cm2 and an efficiency of 2.13% was achieved. Also when In/S ratio was altered to 1.2/12, the short circuit current density increased to 17.8 mA/cm2 with an improved fill factor of 32% and efficiency remaining as 2%. Thus Cu/In and In/S ratios in the precursor solutions play a crucial role in determining the cell parameters
Description: Energy Procedia 15 ( 2012 ) 283 – 290
URI: http://dyuthi.cusat.ac.in/purl/4722
Appears in Collections:Dr. C Sudha Kartha

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