Strategies towards flexible solid state solar cells based on nanocrystalline titanium oxide and organic hole conductor were investigated. For the flexible cell geometry a metal foil was used as substrate and a semi-transparent gold layer as counter electrode which allows light transmission (back illumination). The device performance of solid state cells based on SnO<sub>2</sub>:F coated glass on the one hand and a metal foil on the other hand were characterized and compared by measuring the current voltage curves on back and front illumination.
Karthik Shankar, James I. Basham, Helga Wietasch, Maggie Paulose, Oomman K. Varghese, Craig A. Grimes, Mukundan Mukundan Thelakkat, Jayasundera Bandara
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