Efficient Organic-inorganic Hybrid Hole Extraction Layers to Enhancing Performance and Stability of Hybrid Organic Solar Cells
Yong Woon Han a, Jun Young Choi a, Ran Hee Choi a, Hyoung Seok Lee a, Sung Jae Jeon a, Eui Jin Ko a, Doo Kyung Moon a
a Nano and Information Materials Lab. (NIMs Lab.), Department of Materials Chemistry and Engineering, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul, Republic of Korea
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
Proceedings of International Conference Asia-Pacific Hybrid and Organic Photovoltaics 2018 (AP-HOPV18)
Kitakyūshū-shi, Japan, 2018 January 28th - 30th
Organizers: Shuzi Hayase, Juan Bisquert and Hiroshi Segawa
Poster, Yong Woon Han, 099
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

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