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Updated: Jan 25, 2026

Photodynamic Therapy with Blended Conducting Polymer/Fullerene Nanoparticle Photosensitizers
Published on: October 28, 2015
Enhanced Hole Transport in Ternary Blend Polymer Solar Cells
Koshiro Midori1, Tomohiro Fukuhara1, Yasunari Tamai1,2
1Department of Polymer Chemistry Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, 615-8510, Kyoto, Japan.
Abstract:
Recently, ternary blend polymer solar cells have attracted great attention to improve a short-circuit current density (JSC ) effectively, because complementary absorption bands can harvest the solar light over a wide wavelength range from visible to near-IR region. Interestingly, some ternary blend solar cells have shown improvements not only in JSC but also in fill factor (FF). Previously, we also reported that a ternary blend solar cell based on a low-bandgap polymer (PTB7-Th), a wide-bandgap polymer (PDCBT), and a fullerene derivative (PCBM) exhibited a higher FF than their binary analogues. Herein, we study charge transport in PTB7-Th/PDCBT/PCBM ternary blend films to address the origin of the improvement in FF. We found that hole polarons are located in PTB7-Th domains and their mobility is enhanced in the ternary blend film.
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