Abstract
When zinc oxide nanoparticles (ZnO NPs) are used as the electron transport layer (ETL) in organic solar cells (OSCs), the aggregation of ZnO NPs decreases the stability of the layer and produces many surface defects. Therefore, surface modification of the ZnO NPs is studied with to goal of improving the properties of the ETL. A material made of 3-aminopropyltriethoxysilane-connected ZnO NPs (ZnO/APTES) was used as ETL in inverted OSCs, and their properties were characterized by various methods. Experimental results showed that ZnO/APTES exhibited desirable dispersibility, decreased the surface defects, and improved the power conversion efficiency of the OSCs.
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