Journal
ORGANIC ELECTRONICS
Volume 11, Issue 4, Pages 535-538Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.orgel.2009.12.009
Keywords
Polymer solar cell; Polymer electrode; Semi-transparent; Doping; PEDOT:PSS
Funding
- Deutsche Forschungsgemeinschaft (DFG)
- Federal Ministry of Education and Research (BMBF)
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Semi-transparent polymer solar cells from a blend of poly-(3-hexylthiophene-2,5-diyl) and [6,6]-phenyl C-61 butyric acid methyl ester (P3HT:PCBM) comprising a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) cathode and a vacuum deposited ndoped organic buffer layer have been realized. Among the investigated organic material systems for n-doping, the use of lithium doped bathophenanthroline (BPhen:Li) allowed for proper energy level alignment and subsequently for an open-circuit voltage V-oc approximate to 600 mV. Upon deposition the PEDOT:PSS adheres selectively on the BPhen:Li buffer layer in order to form the laterally defined transparent cathode. (C) 2009 Elsevier B.V. All rights reserved.
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