[9p-E201-1~16] 12.5 Organic, Perovskite, and hybrid solar cells

3:30 PM - 3:45 PM JST(6:30 AM - 6:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9p-E201-8] Development of Semiconducting Polymers Based on Dithiazolonaphthobisthiadiazole for Organic Photovoltaics

〇Kota Oshimo¹, Tsubasa Mikie¹, Itaru Osaka¹ (1.Hiroshima Univ.)

Keywords:

Organic Photovoltaic Cells,Semiconduting Polymers,Conjugated Materials

We designed and synthesized a novel electron-deficient building unit, dithiazolonaphthobisthiadiazole (TzNT), featuring an extended conjugated system for semiconducting polymers. Owing to the strongly electron -deficient nature of the TzNT unit, TzNTbased polymers exhibited deep HOMO energy levels. In addition, their highly coplanar backbones and strong intermolecular interactions led to remarkable crystallinity. As a result, organic photovoltaic cells based on TzNT-based polymers achieved power conversion efficiencies exceeding 16%. In this presentation, the relationships among the synthesis, properties, thin film structures, and OPV performances of these polymers will be discussed.