Efficient bulk heterjunction solar cells based on a low-bandgap polyfluorene copolymers and fullerene derivatives

Jen Hsien Huang, Kuang Chieh Li, Hung Yu Wei, Po Yen Chen, Lu Yin Lin, Dhananjay Kekuda, Hong Cheu Lin, Kuo Chuan Ho, Chih Wei Chu

Research output: Contribution to journalArticle

14 Citations (Scopus)


A low-bandgap polymer (PF-PThCVPTZ) consisted of fluorene and phenothiazine was designed and synthesized. With the donor-acceptor segment, the partial charge transfer can be built in the polymer backbone leading to a wide absorbance. The absorption spectrum of PF-PThCVPTZ exhibits a peak at 510 nm and an absorption onset at 645 nm in the visible range. As blended with [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) as an electron acceptor, narrow bandgap PF-PThCVPTZ as electron donor shows significant solar cell performance. Under AM 1.5 G, 100 mA/cm2 illumination, a power conversion efficiency (PCE) of 1.85% was recorded, with a short circuit current (JSC) of 5.37 mA/cm2, an open circuit voltage (VOC) of 0.80 V, and a fill factor (FF) of 43.0%.

Original languageEnglish
Pages (from-to)1109-1115
Number of pages7
JournalOrganic Electronics: physics, materials, applications
Issue number6
Publication statusPublished - 01-09-2009


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Electrical and Electronic Engineering

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