Proceedings ArticleDOI
Nanoimprinted solar cells with large molecular weight P3HT nanogratings with enhanced molecular alignment
Yi Yang,Kamil Mielczarek,Anvar A. Zakhidov,Walter Hu +3 more
- pp 1-2
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TLDR
In this article, the authors demonstrate efficient polymer solar cells made from large molecular weight poly(3-hexylthiophene-2,5-diyl) (P3HT) nanostructures made by nanoimprint lithography (NIL).Abstract:
We demonstrate efficient polymer solar cells made from large molecular weight (MW) poly(3-hexylthiophene-2,5-diyl) (P3HT) nanostructures made by nanoimprint lithography (NIL). We found NIL allows the polymer with higher MW (> 40 kDa) to organize more strongly than lower MW, which is desired for efficient charge transport but difficult to achieve previously. Solar cells with large MW P3HT nanogratings show a high power conversion efficiency of 4.4%, which is among the best reported for the same materials.read more
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Nano-confinement induced chain alignment in ordered P3HT nanostructures defined by nanoimprint lithography.
TL;DR: The chain alignment is induced by the nanoconfinement during nanoimprinting via pi-pi interaction and hydrophobic interaction between polymer chain and mold surfaces, indicating strong potential to improve charge transport and optical properties for solar cells in comparison to bulk heterojunction structure.
Journal ArticleDOI
The Effect of Poly(3-hexylthiophene) Molecular Weight on Charge Transport and the Performance of Polymer:Fullerene Solar Cells
Amy M. Ballantyne,Lichun Chen,Justin Dane,Thomas C. Hammant,Felix M. Braun,Martin Heeney,Warren Duffy,Iain McCulloch,Donal D. C. Bradley,Jenny Nelson +9 more
TL;DR: In this article, the effect of P3HT molecular weight on charge mobility in pristine and PCBM blend films using highly regioregular P3H has been studied using the time-of-flight method.