- Title
- An equivalent circuit model for ternary blend P3HT:pC₆TP:PCBM low band gap devices
- Creator
- Duck, Benjamin C.; Vaughan, Benjamin; Cooling, Nathan; Zhou, Xiaojing; Holdsworth, John L.; Wen, Lee Li; Rasmussen, Seth C.; Dastoor, Paul C.; Belcher, Warwick J.
- Relation
- Solar Energy Materials and Solar Cells Vol. 114, p. 65-70
- Publisher Link
- http://dx.doi.org/10.1016/j.solmat.2013.02.029
- Publisher
- Elsevier BV
- Resource Type
- journal article
- Date
- 2013
- Description
- Bulk heterojunction binary blends of poly(3-hexylthiophene) (P3HT) and poly(2,3-dihexyl thieno(3,4-b)pyrazine) (pC₆TP) and ternary blends of poly(3-hexylthiophene) (P3HT), poly(2,3-dihexyl thieno(3,4-b)pyrazine) (pC₆TP) and [6,6]-phenyl-C61-butyric acid methylester (PCBM) [6,6]-phenyl-C61-butyric acid methylester (PCBM) have been prepared and studied. Previous work has shown that pC₆TP lies in a select class of semiconducting polymeric materials capable of producing photocurrent at photon energies below 1.1 eV. Here we report a fundamental study to probe the role of pC₆TP in ternary blend devices with P3HT and PCBM and develop an equivalent circuit model for device function based on the concept of separate parallel binary devices. The excellent agreement between the calculated and measured open circuit voltages of the ternary blend devices validates the parallel circuit model and provides a pathway to the design of dedicated low band gap materials for these devices.
- Subject
- organic solar cells; low band gap; equivalent circuit model; ternary blend
- Identifier
- http://hdl.handle.net/1959.13/1299707
- Identifier
- uon:19928
- Identifier
- ISSN:0927-0248
- Language
- eng
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