Figure 5From: Cu2ZnSnSe4 nanocrystals capped with S2− by ligand exchange: utilizing energy level alignment for efficiently reducing carrier rec ombinationCV 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.Back to article page