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Enhancing Fullerene-Based Solar Cell Lifetimes by Addition of a Fullerene Dumbbell

Schroeder, BC; Li, Z; Brady, MA; Faria, GC; Ashraf, RS; Takacs, CJ; Cowart, JS; ... McCulloch, I; + view all (2014) Enhancing Fullerene-Based Solar Cell Lifetimes by Addition of a Fullerene Dumbbell. Angewandte Chemie-international Edition , 53 (47) pp. 12870-12875. 10.1002/anie.201407310. Green open access

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Abstract

Cost‐effective, solution‐processable organic photovoltaics (OPV) present an interesting alternative to inorganic silicon‐based solar cells. However, one of the major remaining challenges of OPV devices is their lack of long‐term operational stability, especially at elevated temperatures. The synthesis of a fullerene dumbbell and its use as an additive in the active layer of a PCDTBT:PCBM‐based OPV device is reported. The addition of only 20 % of this novel fullerene not only leads to improved device efficiencies, but more importantly also to a dramatic increase in morphological stability under simulated operating conditions. Dynamic secondary ion mass spectrometry (DSIMS) and TEM are used, amongst other techniques, to elucidate the origins of the improved morphological stability.

Type: Article
Title: Enhancing Fullerene-Based Solar Cell Lifetimes by Addition of a Fullerene Dumbbell
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/anie.201407310
Publisher version: https://doi.org/10.1002/anie.201407310
Language: English
Additional information: © 2014 The Authors. Published by Wiley‐VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Keywords: Science & Technology, Physical Sciences, Chemistry, Multidisciplinary, Chemistry, fullerenes, lifetime, organic solar cells, photovoltaics, stability, ORGANIC PHOTOVOLTAICS, CONJUGATED POLYMERS, PERFORMANCE, EFFICIENT, BLENDS, TANDEM, DIMERS, POLY(3-HEXYLTHIOPHENE), LIGHT, FILMS
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10048356
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