Preparation and Performance Research of CuInSe<sub>2</sub> Materials Applied in Solar Cell
- 1 School of information science and technology, Northwest University, Xi’an City, China
- 2 School of information science and technology, Northwest University, Xi’an City, China
- 3 School of information science and technology, Northwest University, Xi’an City, China
- 4 School of Materials Science and Engineering, University of Science and Technology Beijing, China
- 5 School of Materials Science and Engineering, University of Science and Technology Beijing, China
- 6 Department of Electrical and computer Engineering, McGill University, Canada
Abstract
At present, CuInSe 2 (referred to as CIS) semiconductor has become one of the hot points in solar cell field at home and abroad for its excellent performances, such as direct bandgap, high light absorption coefficient, high photoelectric conversion efficiency and long-term stability. In this paper, the CIS bulk materials are prepared by the horizontal Bridgman method with double-heat sources, the crystal structure, microstructure morphology and composition of the samples are analyzed in X-ray diffraction instrument (XRD) and scanning electronic microscope (SEM) with Energy Dispersive X-ray Spectrum (EDX), and surface electrical state and electrical properties of the samples are characterized in X-ray photoelectron spectroscopy (XPS) and four point resistivity test system. The results show that the CIS crystal was grown, and that the conductive performance of the samples is good which display the characteristics of p-type semiconductor. Furthermore, a thin film CIS sample was obtained by argon ion-beam scanning bombardment, and it has high solar energy absorptivity and the bandgap of 0.99 eV analyzed in Ultraviolet-visible Spectrum that is suitable for solar cell. Keywords: Solar
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