Article

Novel Photophysical Properties of Fullerene Doped Conducting Polymers

Katsumi Yoshinoa Department of Electronic Engineering, Faculty of Engineering , Osaka University , Yamada-Oka, Suita , Osaka , JapanXiao Hong Yina Department of Electronic Engineering, Faculty of Engineering , Osaka University , Yamada-Oka, Suita , Osaka , JapanTatsuo Akashia Department of Electronic Engineering, Faculty of Engineering , Osaka University , Yamada-Oka, Suita , Osaka , JapanKenji Yoshimotoa Department of Electronic Engineering, Faculty of Engineering , Osaka University , Yamada-Oka, Suita , Osaka , JapanShigenori Moritaa Department of Electronic Engineering, Faculty of Engineering , Osaka University , Yamada-Oka, Suita , Osaka , JapanAnvar Zakhidova Department of Electronic Engineering, Faculty of Engineering , Osaka University , Yamada-Oka, Suita , Osaka , Japan

Molecular crystals and liquid crystals science technology. Section A, Molecular crystals and liquid crystals/Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystalsjournal1994en

ABI

Abstract

Abstract Photoluminescence in conducting polymer with non-degenerated ground state (NDGS CP) such as polythiophene derivatives, poly(p-phenylene vinylene) derivatives and polyfluorene derivatives is quenched remarkably upon doping by fullerenes such as C60 and C70. On the other hand photoconductivity in NDGS CP and also in conducting polymer with degenerated ground state (DGS CP) such as polyacetylene derivatives is enhanced remarkably upon fullerene doping at the excitation of the wavelengths of the inter-band transition in conducting polymer and allowed and forbidden optical transitions in fullerene. Remarkable polarity effect is observed in the spectral response of enhanced photoconductivity. Conducting polymer/C60 layer interface exhibits also unique junction characteristics demonstrating sizable photovoltaic effect due to charges photoseparation at the interface. These unique characteristics are discussed in terms of photo-induced charge transfer between conducting polymers and fullerenes, taking into account the roles of photoexcited self-trapped excitations: exciton-polarons, polarons and charged solitons in polymer main chains and belt-like polaron in C60 spherical molecule.

Topics

Fullerene Chemistry and Applications Organic Electronics and Photovoltaics Conducting polymers and applications

Identifiers

DOI: 10.1080/10587259408029791

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