CV curves of the CZTSe NC thin films and the energy level diagram. (a) CV curves of the CZTSe NC thin films before and after ligand exchange by 550°C selenization. (b) The energy level diagram before the formation of heterojunction in CZTSe solar cells.
Wang et al. Nanoscale Research Letters 2014 9:262 doi:10.1186/1556-276X-9-262