Proceedings of International Conference Asia-Pacific Hybrid and Organic Photovoltaics 2018 (AP-HOPV18)
Publication date: 27th October 2017
Organic solar cells (OSCs) based on organic semiconductors are currently an attractive field of research due to advantages such as solution process, ease of fabrication and potential of flexible device. At present, many studies have been conducted on bulk-heterojunction (BHJ) OSCs based on designing new photoactive materials and optimizing device structure, which achieve high efficiencies of more than 12%.
In inverted structured OSCs, hole extraction layer (HEL), PEDOT:PSS, with high conductivity and transparency, was introduced on photoactive layer via solution process. However, the corrosive nature of polystyrene sulfonate is harmful for photoactive layer with respect to stability of device. It can be good alternative that introducing modified HELs like neutral polyelectrolytes, metal oxides and hybrid materials via solution process for high performance and stability in ambient atmosphere.
In this study, we fabricated OSCs with conjugated polyelectrolytes and metal oxide hybrid HELs to enhanced performance and stability in ambient atmosphere. As a result, hybrid HEL introduced device exhibited enhanced stability than PEDOT:PSS based device.
Keywords: Organic-organic hybrid solar cells, Hole extraction layer, Conjugated polyelectrolytes