We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Efficiency enhancement in low-bandgap polymer solar cells by processing with alkane dithiols.
- Authors
Peet, J; Kim, J Y; Coates, N E; Ma, W L; Moses, D; Heeger, A J; Bazan, G C
- Abstract
High charge-separation efficiency combined with the reduced fabrication costs associated with solution processing and the potential for implementation on flexible substrates make 'plastic' solar cells a compelling option for tomorrow's photovoltaics. Attempts to control the donor/acceptor morphology in bulk heterojunction materials as required for achieving high power-conversion efficiency have, however, met with limited success. By incorporating a few volume per cent of alkanedithiols in the solution used to spin-cast films comprising a low-bandgap polymer and a fullerene derivative, the power-conversion efficiency of photovoltaic cells (air-mass 1.5 global conditions) is increased from 2.8% to 5.5% through altering the bulk heterojunction morphology. This discovery can potentially enable morphological control in bulk heterojunction materials where thermal annealing is either undesirable or ineffective.
- Publication
Nature materials, 2007, Vol 6, Issue 7, p497
- ISSN
1476-1122
- Publication type
Journal Article
- DOI
10.1038/nmat1928