Electric field-assisted self-organization of polymer: Fullerene hybrids on the photovoltaic performance

Chih Cheng Lin, Yun Yue Lin, Shao Sian Li, Chen Chieh Yu, Chi Liang Huang, Shun Han Lee, Chao Hung Du, Jey Jau Lee, Hsuen Li Chen, Chun Wei Chen

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


In this article, we would like to demonstrate an electric field annealing method to assist the self-organization of a poly(3-hexylthiophene) (P3HT):[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) hybrid without any thermal post-treatment. By applying a DC electric field perpendicular to the substrate during the solvent-drying process, the formation of fibrous P3HT crystalline domains and phase-separated domains of bulk heterojunctions can be achieved, resulting in a power conversion efficiency (PCE) of over 4%. The grazing incidence X-ray diffraction (GIXRD) measurement suggests that the electric field-assisted annealing will facilitate the crystallization of P3HT in both lamellar stacking and vertical stacking, as a result of improved carrier transport and photovoltaic performance. The method of electric field-assisted annealing can easily be integrated into large-area and low-temperature processes, providing a new route to fabricate low-cost and flexible polymer solar cells.

Original languageEnglish
Pages (from-to)2134-2139
Number of pages6
JournalEnergy and Environmental Science
Issue number6
Publication statusPublished - Jun 1 2011
Externally publishedYes

ASJC Scopus subject areas

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution


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