The effect of solvent induced crystallinity of polymer layer on poly(3-hexylthiophene)/C70 bilayer solar cells

Dhananjaya Kekuda, Hao Shing Lin, Meng Chyi Wu, Jen Shein Huang, Kuo Chuan Ho, Chih Wei Chu

Research output: Contribution to journalArticle

18 Citations (Scopus)


A bilayer polymer solar cell is demonstrated with the device configuration ITO/PEDOT:PSS/poly(3-hexylthiophene)/C70/Al. In this article, we highlight the importance of polymer surface morphology, its crystallinity and mobility on device output parameters. The solvent used for polymer processing plays a major role in deciding these parameters and it was observed that high boiling point solvents are desirable for achieving large surface roughness of the polymer layer, which in turn provide more interface area in the bilayer device structure. Due to the increased interface area for exciton dissociation, these bilayer devices resulted in a maximum power conversion efficiency of 3.65% under one sun radiation.

Original languageEnglish
Pages (from-to)419-422
Number of pages4
JournalSolar Energy Materials and Solar Cells
Issue number2
Publication statusPublished - 01-02-2011


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films

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