摘要
Reducing the manufacturing cost of solar cells is necessary to their industrial production. Electrodepositing is an effective, non-vacuum method which is very suitable for cutting the manufacturing cost of thin films as well as developing its large-scale industrial production. In this study, about 1-μm-thick Cu（In,Ga）Se2（CIGS） precursors were electrodeposited on Mo/glass substrates in aqueous solution utilizing a three-electrode potentiostatic system.Triethanolamine was used as complexing agent, and all parameters of electrodeposition were precisely controlled.After that, the electrodeposited precursors were selenized in a Se atmosphere with different heating ramp rates（60 and 600℃·min^（-1））. High-quality CIGS films were obtained, and their characteristics were investigated by X-ray fluorescence, scanning electron microscopy, energydispersive spectroscopy, X-ray diffraction, Raman spectra and near-infrared-visible（NIR-Vis） spectra. The results reveal that there are many differences between the properties of the films under different heating rates. Finally,CIGS solar cells were fabricated using a fast and a slow heating rate. The maximum efficiencies achieved for the films selenized at 60 and 600℃-min^（-1） are 3.15% and 0.71%, respectively.
Reducing the manufacturing cost of solar cells is necessary to their industrial production. Electrodepositing is an effective, non-vacuum method which is very suitable for cutting the manufacturing cost of thin films as well as developing its large-scale industrial production. In this study, about 1-μm-thick Cu（In,Ga）Se2（CIGS） precursors were electrodeposited on Mo/glass substrates in aqueous solution utilizing a three-electrode potentiostatic system.Triethanolamine was used as complexing agent, and all parameters of electrodeposition were precisely controlled.After that, the electrodeposited precursors were selenized in a Se atmosphere with different heating ramp rates（60 and 600℃·min^（-1））. High-quality CIGS films were obtained, and their characteristics were investigated by X-ray fluorescence, scanning electron microscopy, energydispersive spectroscopy, X-ray diffraction, Raman spectra and near-infrared-visible（NIR-Vis） spectra. The results reveal that there are many differences between the properties of the films under different heating rates. Finally,CIGS solar cells were fabricated using a fast and a slow heating rate. The maximum efficiencies achieved for the films selenized at 60 and 600℃-min^（-1） are 3.15% and 0.71%, respectively.
基金
financially supported by the National High Technology Research and Development Program of China(No.2015AA034201)
the National Natural Science Foundation of China(No.11474355)
the Chinese Universities Scientific Fund(No.2017LX002)
