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Self-Assembled Poly(3,4-ethylene Dioxythiophene):Poly(styrenesulfonate)/Graphene Quantum Dot Organogels For Efficient Charge Transport In Photovoltaic Devices.

H. Lim, S. Min, Eunwoo Lee, Jyongsik Jang, S. Kim, Jong-In Hong
Published 2015 · Materials Science, Medicine

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UNLABELLED We report the self-assembly of poly(3,4-ethylene dioxythiophene):poly(styrenesulfonate) ( PEDOT PSS) organogel films incorporating graphene quantum dots (GQDs). Because of the electrostatic interaction between the GQDs and the PEDOT chains, GQD@PEDOT core-shell nanostructures are readily formed. We demonstrate that the GQDs affect the reorientation of PEDOT chains and the formation of interconnected structure of PEDOT-rich domains, improving the charge transport pathway. The power conversion efficiency of the organic photovoltaic device containing the self-assembled organogel as the hole extraction layer (HEL) was 26% higher than the device with pristine PEDOT-PSS as the HEL.
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