@inbook{Kim:2010:10.1142/9789814317665_0009,
author = {Kim, Y and Cook, S and Tuladhar, SM and Choulis, SA and Nelson, J and Durrant, JR and Bradley, DDC and Giles, M and Mc, Culloch I and Ha, CS and Ree, M},
booktitle = {Materials for Sustainable Energy: A Collection of Peer-Reviewed Research and Review Articles from Nature Publishing Group},
doi = {10.1142/9789814317665_0009},
pages = {63--69},
title = {A strong regioregularity effect in self-organizing conjugated polymer films and high-efficiency polythiophene: Fullerene solar cells},
url = {http://dx.doi.org/10.1142/9789814317665_0009},
year = {2010}
}

Download

TY  - CHAP
AB  - Low-cost photovoltaic energy conversion using conjugated molecular materials has become increasingly feasible through the development of organic ‘bulk heterojunction (BHJ)’ structures1−7, where efficient light-induced charge separation is enabled by a large-area donor–acceptor interface2,3. The highest efficiencies have been achieved using blends of poly(3-hexylthiophene) (P3HT) and a fullerene derivative8–12, but performance depends critically on the material properties and processing conditions. This variability is believed to be influenced by the self-organizing properties of P3HT, which means that both optical13,14and electronic15,16properties are sensitive to the molecular packing. However, the relationship between molecular nanostructure, optoelectronic properties of the blend material and device performance has not yet been demonstrated. Here we focus on the influence of polymer regioregularity (RR) on the molecular nanostructure, and hence on the resulting material properties and device performance.We find a strong influence of RR on solar-cell performance, which can be attributed to enhanced optical absorption and transport resulting from the organization of P3HT chains and domains. Further optimization of devices using the highest RR material resulted in a power conversion efficiency of 4.4%, even without optimization of electrodes7.
AU  - Kim,Y
AU  - Cook,S
AU  - Tuladhar,SM
AU  - Choulis,SA
AU  - Nelson,J
AU  - Durrant,JR
AU  - Bradley,DDC
AU  - Giles,M
AU  - Mc,Culloch I
AU  - Ha,CS
AU  - Ree,M
DO  - 10.1142/9789814317665_0009
EP  - 69
PY  - 2010///
SN  - 9789814317641
SP  - 63
TI  - A strong regioregularity effect in self-organizing conjugated polymer films and high-efficiency polythiophene: Fullerene solar cells
T1  - Materials for Sustainable Energy: A Collection of Peer-Reviewed Research and Review Articles from Nature Publishing Group
UR  - http://dx.doi.org/10.1142/9789814317665_0009
ER  - 

Download