alexa Fabrication Of 3-D Nanostructured And Solution Processed CIGS Thin Film Solar Cells
ISSN: 2169-0022

Journal of Material Sciences & Engineering
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3rd International Conference and Exhibition on Materials Science & Engineering
October 06-08, 2014 Hilton San Antonio Airport, USA

Van Ben Chu
Accepted Abstracts: Material Sci Eng
DOI: 10.4172/2169-0022.S1.017
Abstract
In this presentation, we demonstrate the fabrication of CuInGaS2 (CIGS) thin film solar cells with a three dimensional (3-D) nanostructure based on indium tin oxide (ITO) nanorod films and precursor solutions (Cu, In, and Ga nitrates in alcohol). To achieve 3-D nanostructured and solution processed CIGS thin film solar cells ITO nanorod substrate was used as a back contact electrode. The precursor solution of Cu, In, and Ga without binder material was then drop-casted followed by ultrasonic vibration to completely fill the gaps between ITO nanorods. After all ITO nanorods were embedded the second precursor solution with polymer binder was spin-coated to increase the thickness of the CIGS films. Subsequent annealing processes in air as well as sulfur environment resulted in polycrystalline CIGS film. The structures, morphology, optical property and quantum efficiency were investigated by XRD, SEM, UV-Vis absorption and spectral IPCE measurements. Solar cell device with Al,Ni/AZO/i-ZnO/CdS/CIGS/ITO nanorods/glass structure was fabricated showing the power conversion efficiency of 6.3% at standard irradiation conditions, which is 22.5% higher compared to the identical solar cells with planar ITO substrate. The details of fabrication method and characteristics of the solar cells will be discussed in the presentation.
Biography
Van Ben Chu is a PhD in Clean energy and Chemical engineering Department at Korea University of Science and Technology. He received his BSc in Materials Science and Technology from Hanoi University of Technology in Vietnam and MSc in Intelligent light and display from Dongguk University in Korea. He has published 4 papers in reputed journals.
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