Opto-electrical and morphological characterization of water soluble conjugated polymers for eco-friendly hybrid solar cells

Gopala Krishna V. V. Thalluri, Jean-Christophe Bolsee, Abay Gadisa, Mikhail Parchine, Tine Boonen, Jan D'Haen, Ayse E. Boyukbayram, Joke Vandenbergh, Thomas J. Cleij, Laurence Lutsen, Dirk Vanderzande, Jean V. Manca*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


Solid-state dye-sensitized solar cells (ss-dsscs) are promising candidates for future low cost photovoltaic energy generation and are based on polymer/metal oxide donor/acceptor heterojunctions. However, a crucial drawback of hybrid solar cells is the use of environmental unfriendly solvents, such as toluene, chloroform, chlorobenzene, etc. In the phase of preparation. In this work towards eco-friendly processing, we use water as a solvent in the preparation of the photo-active layer for hybrid solar cells. We demonstrate eco-friendly hybrid polymer/titania solar cells consisting of water soluble polythiophene as light-absorber, donor and hole transporting layer (htl), above a tio2 layer that acts as an acceptor and electron conductor. The water soluble conjugated polymer materials are studied in terms of their opto-electrical and morphological properties, leading to a better understanding of the resulting photovoltaic performance. An alternative new processing method in device preparation is introduced; yielding prototype solar cells with an efficiency of 0.7%. This promising solar cell device performance can be considered as a proof-of-principle for future eco-friendly solar cells.
Original languageEnglish
Pages (from-to)3262-3268
JournalSolar Energy Materials and Solar Cells
Issue number12
Publication statusPublished - Dec 2011
Externally publishedYes


  • Eco-friendly solar cells
  • Water soluble conjugated polymers
  • Spray coating
  • Charge transport properties

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