Panchromatic small-molecule organic solar cells based on a pyrrolopyrrole aza-BODIPY with a small energy loss

Ru Feng, Tatsuya Mori, Takuma Yasuda, Hiroyuki Furuta, Soji Shimizu

研究成果: ジャーナルへの寄稿学術誌査読

1 被引用数 (Scopus)

抄録

A small photon energy loss (Eloss) is one of the requisites for achieving near-infrared (NIR) small-molecule organic solar cells (SM-OSCs). Herein, we present two novel pyrrolopyrrole aza-BODIPY (PPAB)-based panchromatic chromophores, TT-2PPAB and DFBT-2PPAB, with an acceptor-donor-acceptor configuration for photovoltaic studies. Among them, in combination with [6,6]-phenyl-C71 butyric acid methyl ester (PC71BM) acceptor, TT-2PPAB exhibits a moderate power conversion efficiency (PCE) of 3.11% due to an Eloss of 0.48 eV, which is smaller than the empirical limit of 0.6 eV. Based on the electrochemistry and theoretical calculations, we revealed that the efficient photovoltaic performance of the TT-2PPAB-based device can be ascribed to the sufficiently deep LUMO level of TT-2PPAB for charge transfer to PC71BM.

本文言語英語
論文番号111020
ジャーナルDyes and Pigments
210
DOI
出版ステータス出版済み - 2月 2023

!!!All Science Journal Classification (ASJC) codes

  • 化学工学一般
  • プロセス化学およびプロセス工学

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