Effects of PTFE and PEDOT:PSS Double Buffer Layers on Flexible Polymer Solar Cells

Da Ma; Chun  Xia Zhang; Pan Pan Zhang; Li  Xin Zhang; Yang Dang; Xin Chen; Bo Nan Kang

doi:10.4028/www.scientific.net/AMR.1094.205

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1094Effects of PTFE and PEDOT:PSS Double Buffer Layers...

Effects of PTFE and PEDOT:PSS Double Buffer Layers on Flexible Polymer Solar Cells

Abstract:

We investigate the effects of polytetrafluoroethylene (PTFE) on organic photovoltaic (OPV) devices with structure of ITO/PTFE/PEDOT:PSS/P3HT:PCBM/PTFE/Al by inserting thermally evaporated PTFE films between indium-tin-oxide (ITO) and PEDOT:PSS layers, and also between P3HT:PCBM and Al, respectively. Significant improvement in terms of open-circuit voltage, Fill factor (FF), and thereby in its commensurate power conversion efficiency is achieved compared to devices with PEDOT:PSS and LiF buffer layers. The OPVs performance enhancement is attributed to the formation of an artificial dipole layer resulting from the rich, negatively charged fluorine that facilitates the charge extraction process.

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Advanced Materials Research (Volume 1094)

Pages:

205-208

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1094.205

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Online since:

March 2015

Authors:

Da Ma, Chun Xia Zhang, Pan Pan Zhang, Li Xin Zhang, Yang Dang, Xin Chen, Bo Nan Kang*

Keywords:

Buffer Layers, Flexible Polymer Solar Cells, PTFE

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* - Corresponding Author

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