Journal article
Increase in internal quantum efficiency in small molecular oligothiophene: C60 mixed heterojunction solar cells by substrate heating
- Abstract:
- We present small molecule solar cells with α,ω-bis-(dicyanovinylene)-sexithiophene: C60 mixed heterojunctions, reaching power conversion efficiencies of 4.9±0.2%. We use substrate heating during deposition of the mixed layer to achieve an optimized morphology and show that this significantly improves the internal quantum efficiencies (IQEs) to values approaching 70%. By optical modeling, we evaluate the amount of loss due to absorption in inactive layers and show that IQE of the active layer itself is about 80%. © 2010 American Institute of Physics.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 414.0KB, Terms of use)
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- Publisher copy:
- 10.1063/1.3475766
Authors
- Publisher:
- American Institute of Physics
- Journal:
- Applied Physics Letters More from this journal
- Volume:
- 97
- Issue:
- 7
- Article number:
- 073503
- Publication date:
- 2010-08-16
- DOI:
- ISSN:
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0003-6951
- Language:
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English
- Pubs id:
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pubs:405395
- UUID:
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uuid:87ba93ca-8389-41e4-a43b-ed9b3a112127
- Local pid:
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pubs:405395
- Source identifiers:
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405395
- Deposit date:
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2013-09-26
Terms of use
- Copyright holder:
- American Institute of Physics
- Copyright date:
- 2010
- Notes:
- Copyright 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Appl. Phys. Lett. 97, 073503 (2010) and may be found at http://dx.doi.org/10.1063/1.3475766
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