Water-soluble polythiophene/nanocrystalline TiO2 solar cells

Qiquan Qiao; McLeskey, James T.
April 2005
Applied Physics Letters;4/11/2005, Vol. 86 Issue 15, p153501
Academic Journal
We report the characteristics of polymer/nanocrystalline solar cells fabricated using an environmentally friendly water-soluble polythiophene and TiO2 in a bilayer configuration. The cells were made by dropping the polymer onto a TiO2 nanocrystalline film and then repeatedly sweeping a clean glass rod across the polymer as it dried. The devices showed an open circuit voltage of 0.81 V, a short circuit current density of 0.35 mA/cm2, a fill factor of 0.4, and an energy conversion efficiency of 0.13%. The water-soluble polythiophene showed significant photovoltaic behavior and the potential for use in solar cells.


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