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Inverted organic photovoltaic devices with high efficiency and stability based on metal oxide charge extraction layers
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Schumann, Stefan, Da Campo, Raffaello, Illy, B., Cruickshank, A. C., McLachlan, M. A., Ryan, M. P., Riley, D. J., McComb, D. W. and Jones, T. S. (Tim S.) (2011) Inverted organic photovoltaic devices with high efficiency and stability based on metal oxide charge extraction layers. Journal of Materials Chemistry, Vol.21 (No.7). pp. 2381-2386. doi:10.1039/c0jm03048a ISSN 0959-9428.
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Official URL: http://dx.doi.org/10.1039/c0jm03048a
Abstract
A substantial increase in device performance and operational stability in solution processed inverted bulk heterojunction (BHJ) organic photovoltaic devices (OPV) is demonstrated by introducing a zinc oxide (ZnO) interlayer between the electron collecting bottom electrode and the photoactive blend of poly(3-hexylthiophene) (P3HT) and phenyl-C(61)-butyric acid methyl ester (PCBM). The structure and morphology of the dense, planar ZnO layers were controlled either by electro-deposition or spray pyrolysis techniques. Metal oxide sandwich OPV devices based on the photoactive blend on an electro-deposited ZnO interlayer with a (100) preferential crystal orientation, and using a tungsten oxide (WO(x)) interlayer on the opposite electrode, resulted in a remarkable increase in power conversion efficiency with a value of 4.91% under AM1.5 illumination and an external quantum efficiency of 74%. Electro-deposition of the ZnO at low temperature proved to be the most promising method for forming the ZnO interlayers, allowing the highest control of film structure and morphology, as well as leading to significantly improved device efficiency and stability.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||
Journal or Publication Title: | Journal of Materials Chemistry | ||||
Publisher: | Royal Society of Chemistry | ||||
ISSN: | 0959-9428 | ||||
Official Date: | 2011 | ||||
Dates: |
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Volume: | Vol.21 | ||||
Number: | No.7 | ||||
Page Range: | pp. 2381-2386 | ||||
DOI: | 10.1039/c0jm03048a | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
Data sourced from Thomson Reuters' Web of Knowledge
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