Deposition of Cu_2ZnSnS_4 Thin Film by Pulsed Laser Deposition and Assembly of Thin Film Solar Cell with the Novel Structure of FTO/CdS/Cu_2ZnSnS_4/Mo

摘要

Cu_2ZnSnS_4 (CZTS) thin film was successfully prepared by pulsed laser deposition using CZTS nanocrystal as a source and the thin film solar cell with the novel structure of FTO/CdS/CZTS/Mo was assembled. At the laser incident energy of 6 J·cm~(-2), the chemical composition of the CZTS thin film was Cu_(1.74)Zn_(0.80)Sn_(1.00)S_(4.04), near to stoichiometric ratio. The thin film solar cell with the novel structure of FTO/CdS/CZTS/Mo gave short circuit photocurrent density of 1.01 mA·cm~(-2), open circuit voltage of 0.39 V, and fill factor of 0.485, corresponding to the photoelectric conversion efficiency of 0.19% at the illumination (Air Mass 1.5, 100 mW·cm~(-2)).