Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 33, Issue 23, Pages 2035-2040Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201200503
Keywords
large-area fabrication; nanocavities; nanopillars; organic solar cells; P3HT
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Funding
- National Research Foundation of Korea (NRF) Grants through the National Creative Research Initiative Center for Intelligent Hybrids [2010-0018290]
- WCU Program of Chemical Convergence for Energy Environment [R31-10013]
- Brain Korea 21 Program
- Ministry of Education, Science and Technology (MEST)
- German Science Foundation DFG [IRTG 1404]
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A strategy to fabricate nanostructured poly(3-hexylthiophene) (P3HT) films for organic photovoltaic (OPV) cells by a direct transfer method from a reusable soft replica mold is presented. The flexible polyfluoropolyether (PFPE) replica mold allows low-pressure and low- temperature process condition for the successful transfer of nanostructured P3HT films onto PEDOT/PSS-coated ITO substrates. To reduce the fabrication cost of masters in large area, we employed well-ordered anodic aluminum oxide (AAO) as a template. Also, we provide a method to fabricate reversed nanostructures by exploiting the self-replication of replica molds. The concept of the transfer method in low temperature with a flexible and reusable replica mold obtained from an AAO template will be a firm foundation for a low-cost fabrication process of ordered OPVs.
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