Abstract
A comparative photochemical stability study of a wide range of π-conjugated polymers relevant to polymer solar cells is presented.
More than 20 samples were selected to cover a broad variety of polymer types (purely donor, donor / acceptor, thermo-cleavable)
and chemical structures. Many of the moieties commonly used in the PSCs field are thus included in this study. The behavior of
each material has been carefully investigated under simulated sunlight (1 sun, 1000 W m-2, AM 1.5G) and ambient atmosphere.
Degradation was monitored all along ageing combining UV-visible and Infra-red spectroscopies. Polymer durability was shown to
cover a very broad range of values, from very few hours (e.g. MEH-PPV) to several thousands of hours (e.g. some thermo-cleaved
samples). As all the experiments were conducted under the same conditions, comparison of the collected data was possible and the
influence of different points on photochemical stability is discussed (donor and acceptor group nature, side-chain type). This
screening finally allowed for the description of general rules for π-conjugated polymer photochemical stability. Our results thus
provide a better description of the structure – stability relationship, as well as meaningful help if ones aim is to synthesize new
good candidates for PSCs that unite efficiency and stability.
Original language | English |
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Title of host publication | Book of abstracts |
Publisher | Danmarks Tekniske Universitet, Risø Nationallaboratoriet for Bæredygtig Energi |
Publication date | 2010 |
Publication status | Published - 2010 |
Event | 3rd International Summit on OPV Stability - Risø, Denmark Duration: 21 Oct 2010 → 29 Oct 2010 Conference number: 3 http://indico.conferences.dtu.dk/conferenceDisplay.py?ovw=True&confId=35 |
Conference
Conference | 3rd International Summit on OPV Stability |
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Number | 3 |
Country/Territory | Denmark |
City | Risø |
Period | 21/10/2010 → 29/10/2010 |
Internet address |
Keywords
- Polymer solar cells
- Solar energy