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Increased efficiency of small molecule photovoltaic cells by insertion of a MoO3 hole-extracting layer
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Hancox, Ian, Chauhan, K. V., Sullivan, Paul J., Hatton, Ross A., Moshar, A., Mulcahy, C. P. A. and Jones, T. S. (Tim S.) (2010) Increased efficiency of small molecule photovoltaic cells by insertion of a MoO3 hole-extracting layer. Energy & Environmental Science, Vol.3 (No.1). pp. 107-110. doi:10.1039/b915764f ISSN 1754-5692.
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Official URL: http://dx.doi.org/10.1039/b915764f
Abstract
We report a similar to 60% increase in open circuit voltage (V-oc) and power conversion efficiency in a chloroaluminium phthalocyanine (ClAlPc)/fullerene (C-60) planar heterojunction photovoltaic device after insertion of a MoO3 hole-extracting layer at the interface between the indium tin oxide (ITO) electrode and the ClAlPc donor layer, with an associated improvement in device stability. A similar improvement was observed in heterojunction devices based on mixed ClAlPc/C-60 layers. We propose that the improvements in device performance are due to the pinning of the ITO Fermi level to the valance band of the MoO3 interlayer, where the latter is closely aligned with the highest occupied molecular orbital of ClAlPc.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry T Technology > TJ Mechanical engineering and machinery T Technology > TP Chemical technology G Geography. Anthropology. Recreation > GE Environmental Sciences |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||
Journal or Publication Title: | Energy & Environmental Science | ||||
Publisher: | Royal Society of Chemistry | ||||
ISSN: | 1754-5692 | ||||
Official Date: | 2010 | ||||
Dates: |
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Volume: | Vol.3 | ||||
Number: | No.1 | ||||
Number of Pages: | 4 | ||||
Page Range: | pp. 107-110 | ||||
DOI: | 10.1039/b915764f | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC), Royal Academy of Engineering |
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