Non-destructive optical characterization of phase separation in bulk heterojunction organic photovoltaic cells
- Submitting institution
-
University of Sunderland
- Unit of assessment
- 12 - Engineering
- Output identifier
- 840
- Type
- D - Journal article
- DOI
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10.1016/j.solmat.2014.03.006
- Title of journal
- Solar Energy Materials and Solar Cells
- Article number
- -
- First page
- 190
- Volume
- 125
- Issue
- -
- ISSN
- 0927-0248
- Open access status
- Out of scope for open access requirements
- Month of publication
- June
- Year of publication
- 2014
- URL
-
http://sure.sunderland.ac.uk/id/eprint/7759/
- Supplementary information
-
-
- Request cross-referral to
- -
- Output has been delayed by COVID-19
- No
- COVID-19 affected output statement
- -
- Forensic science
- No
- Criminology
- No
- Interdisciplinary
- No
- Number of additional authors
-
4
- Research group(s)
-
-
- Proposed double-weighted
- No
- Reserve for an output with double weighting
- No
- Additional information
- We implemented the non-destructive optical characterisation of Spectroscopic Ellipsometry for the detailed investigation of the vertical phase separation mechanisms of C- and Si-bridged dithiophene polymers blended with PC70BM to be used as photoactive layer for organic photovoltaics. The method provided the volume fraction composition at the top and bottom regions of the blends which is critical for efficient charge separation and transport. The work informed the literature by revealing the role of the interfacial surface energies in the vertical phase separation that should be controlled during roll-to-roll processing, contributing to the fabrication of efficient flexible organic photovoltaics.
- Author contribution statement
- -
- Non-English
- No
- English abstract
- -