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Performance Enhancement of the P3HT/PCBM Solar Cells through NIR Sensitization Using a Small‐Bandgap Polymer
Author(s) -
Ameri Tayebeh,
Min Jie,
Li Ning,
Machui Florian,
Baran Derya,
Forster Michael,
Schottler Kristina J.,
Dolfen Daniel,
Scherf Ullrich,
Brabec Christoph J.
Publication year - 2012
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201200219
Subject(s) - materials science , band gap , optoelectronics , polymer , energy conversion efficiency , polymer solar cell , polymer blend , composite material , copolymer
A smart strategy to significantly improve the energy conversion efficiency of the wide‐bandgap polymer P3HT blended in PCBM is demonstrated through NIR sensitization with a low‐bandgap polymer. An efficiency of over 4% is achieved by adding 30–40% of the low bandgap polymer Si‐PCPDTBT to the binary P3HT:PCBM blend, corresponding to an efficiency improvement of 25% compared to the P3HT:PCBM reference binary blend.