Abstract
This paper reports the successful fabrication of glass/ZnO/CdS/CuInS2 solar cells with a superstrate structure deposited using full spray pyrolysis deposition (FSPD). The structure, and the optical and electrical properties of the constituent layers are investigated. The CuInS2 (CIS) film deposited from a starting solution with [Cu]/[In] = 1.1 and the Al-doped CuInS2 (CIAS) film deposited from a solution with [Cu]/[In] = 1.0 and [Al]/[In] = 0.12, and using a sulfurization process, is observed to exhibit the best crystallites with tetragonal structures. The optical band-gap of the CIAS film is obtained as 1.49 eV. Moreover, physical properties of both the ZnO and the CdS thin films are also studied. The obtained parameters of the cells are an open-circuit voltage of V OC = 425 mV, a short circuit current density of J SC = 14.02 mA/cm2, a fill factor of FF = 28.75%, and a conversion efficiency of η = 1.71%. The results in our experiment show that FSPD is a potential technique for preparing solar cells based on CIS absorbers in a superstrate structure with low cost and high performance.
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Thai, T.T., Hieu, N.D., Anh, L.T.L. et al. Fabrication and characteristics of fully-sprayed ZnO/CdS/CuInS2 solar cells. Journal of the Korean Physical Society 61, 1494–1499 (2012). https://doi.org/10.3938/jkps.61.1494
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DOI: https://doi.org/10.3938/jkps.61.1494