Controlling C 60 fullerene nanocolumn morphology for organic photovoltaic applications
作者： Michael Thomas , Brian J. Worfolk , David A. Rider , Michael T. Taschuk , Jillian M. Buriak
DOI: 10.1109/PVSC.2011.6186060
关键词:
摘要: We investigate nanostructuring approaches in inverted organic photovoltaic cells to increase exciton harvesting. Conventional bulk heterojunctions (BHJs) have disordered morphologies which dissociation. However, BHJs free charge carriers can be trapped pocket domains and dead ends. Using glancing angle deposition (GLAD) we fabricate vertical nanocolumns heterointerface area while improving transport. Nanostructured C 60 columns been fabricated using GLAD on transparent indium tin oxide coated glass substrates. control intercolumn spacing, column shape, film thickness other properties. When depositing at constant substrate rotation were achieved. Intercolumn spacing was controlled by the between source. To further approach ideal nanostructure for (OPVs), diameter through a motion algorithm called phi-sweep. The engineered nanomorphology yielded fivefold short-circuit current when compared planar devices two-fold with heterojunctions.
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