Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 93, Issue 4, Pages 497-500Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2008.11.002
Keywords
Inverted polymer solar cells; Vacuum-free processing; PEO; Open-circuit voltage
Funding
- Center of Organic Electronics at Linkoping University
- Strategic Research Foundation SSF
- Chinese Scholarship Council [2007U15021]
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Inverted transparent polymer solar cells were fabricated by sequentially depositing several organic layers from fluids, on ITO/glass substrates. ITO was used as a cathode to collect electrons. The photovoltage of these diodes can be increased by up to 400 mV by inserting a buffer layer of polyethylene oxide between ITO and the active layers, which results in 4-fold enhancement of power conversion efficiency under the illumination of 100 mW/cm(2) simulated AM1.5 solar light. The enhancement of V., is consistent with the work function change between ITO and ITO/PEO measured by photoelectron spectroscopy. Solar cell production without vacuum processing may lower production costs. (C) 2008 Elsevier B.V. All rights reserved.
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