Polymer impinged CdS/CuInSe2 solar cell |
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| Authors: | Rajesh A Joshi Vidya S Taur Ramphal Sharma |
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| Affiliation: | 1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, CAS, Changchun, 130022, China;2. University of Chinese Academy of Sciences, Beijing, 100049, China;1. University of California, Merced – 5200 Lake Rd, Merced, CA 95343, USA;2. University of California, Advanced Solar Energy Institute (UC Solar), USA;1. School of Energy Science and Engineering, Harbin Institute of Technology, 92, West Dazhi Street, Harbin 150001, PR China;2. School of New Energy, Harbin Institute of Technology at Weihai, 2, West Wenhua Road, Weihai 264209, PR China |
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| Abstract: | In the present paper we report, effect of conjugated polymer (polyaniline) impinging in nanostructured CdS/CuInSe2 heterojunction thin film solar cell. The heterojunction architecture for the solar cell is achieved by sandwiching the conjugated conducting polymer in n and p type of wide band gap semiconducting material by multilayer chemical deposition methods onto the ITO coated glass substrate at room temperature. The obtained multilayer thin film heterojunction of ITO/CdS/Polymer/CuInSe2/Ag has been characterized for structural, compositional, optical and solar cell characteristics by illuminating it to 100 mW/cm2 intensity light source. The X-ray diffraction pattern (XRD) confirms formation of CdS/CuInSe2 phase while on polymer impinging the crystallite size observed to be increased from 13 to 19 nm. The compositional analysis by energy dispersive X-ray spectra (EDAX) supports presence of expected elements in the heterojunction. The energy band gap calculated from absorbance spectra shows significant shift in its value from polymer and CdS/CuInSe2 band gap. I–V analysis shows increase in conversion efficiency from 0.26 in CdS/CuInSe2 to 0.55% in CdS/Polymer/CuInSe2 heterojunction upon illumination. |
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