- Title
- A new model for PCBM phase segregation in P3HT:PCBM blends
- Creator
- Berriman, Garth A.; Holmes, Natalie P.; Holdsworth, John L.; Zhou, Xiaojing; Belcher, Warwick J.; Dastoor, Paul C.
- Relation
- Organic Electronics Vol. 30, p. 12-17
- Publisher Link
- http://dx.doi.org/10.1016/j.orgel.2015.12.014
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2016
- Description
- The phase segregation in P3HT:PCBM blend films has been investigated from an experimental and theoretical viewpoint. Optical microscopy, atomic force microscopy, scanning electron microscopy and X-ray diffraction show that thermal annealing of P3HT:PCBM blend films leads to the formation of PCBM aggregates. These aggregates are composed of dense randomly packed ~50 nm PCBM crystallites with an overall aggregate density of ~0.85 g cm-3. By applying the critical radius of nucleation for PCBM and the Stokes-Einstein equation for mobility of PCBM in a P3HT matrix, a model is developed which explains the formation of both crystallites and aggregates.
- Subject
- P3HT; PCBM; polymer blends; aggregation; crystallisation
- Identifier
- http://hdl.handle.net/1959.13/1345754
- Identifier
- uon:29716
- Identifier
- ISSN:1566-1199
- Language
- eng
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