Journal
ORGANIC ELECTRONICS
Volume 15, Issue 3, Pages 661-666Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.orgel.2013.12.018
Keywords
Recyclable organic solar cells; Cellulose nanocrystal; Film-transfer lamination
Funding
- Center for Interface Science: Solar Electric Materials, an Energy Frontier Research Center
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001084]
- Office of Naval Research [N00014-04-1-0313]
- US Department of Agriculture - Forest Service [12-JV-11111122-098]
- USDA-Forest Service [11-JV-11111129-118]
- Air Force Office of Scientific Research [FA9550-11-1-0162]
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We report on efficient solar cells on recyclable cellulose nanocrystal (CNC) substrates with a new device structure wherein polyethylenimine-modified Ag is used as the bottom electron-collecting electrode and high-conductivity poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS, PH1000) is used as the semitransparent top hole-collecting electrode. The PEDOT:PSS top electrode is deposited by a film-transfer lamination technique. This dry process avoids swelling damage to the CNC substrate, which is observed when PEDOT:PSS is directly spin-coated from an aqueous solution. Solar cells on recyclable CNC substrates exhibit a maximum power conversion efficiency of 4.0% with a large fill factor of 0.64 +/- 0.02 when illuminated through the top semitransparent PEDOT:PSS electrode. The performance of solar cells on CNC substrates is comparable to that of reference solar cells on polyethersulfone substrates. (C) 2013 Elsevier B. V. All rights reserved.
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