Chow, P. C. Y., Bayliss, S. L. , Lakhwani, G., Greenham, N. C. and Friend, R. H. (2015) In situ optical measurement of charge transport dynamics in organic photovoltaics. Nano Letters, 15(2), pp. 931-935. (doi: 10.1021/nl503687u) (PMID:25585168)
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Abstract
We present a novel experimental approach which allows extraction of both spatial and temporal information on charge dynamics in organic solar cells. Using the wavelength dependence of the photonic structure in these devices, we monitor the change in spatial overlap between the photogenerated hole distribution and the optical probe profile as a function of time. In a model system we find evidence for a buildup of the photogenerated hole population close to the hole-extracting electrode on a nanosecond time scale and show that this can limit charge transport through space-charge effects under operating conditions.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Bayliss, Dr Sam |
| Authors: | Chow, P. C. Y., Bayliss, S. L., Lakhwani, G., Greenham, N. C., and Friend, R. H. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Nano Letters |
| Publisher: | American Chemical Society |
| ISSN: | 1530-6984 |
| ISSN (Online): | 1530-6992 |
| Published Online: | 23 January 2015 |
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