Donor-acceptor poly(thiophene-block-perylene diimide) copolymers: Synthesis and solar cell fabrication

Date

2009-02-24

Author

ZHANG, Qingling
Çırpan, Ali
RUSSELL, Thomas P.
EMRICK, Todd

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Donor-acceptor diblock copolymers, composed of regioregular Poly(3-hexylthiophene) (rrP3HT) as the electron donor block and poly(perylene diimide acrylate) (PPDA) as the electron acceptor block, were prepared and used to fabricate a solar cell. Vinyl-terminated rrP3HT was synthesized by Grignard metathesis polymerization and converted to an alkoxyamine macroinitiator. This polythiophene macroinitiator was used in controlled free radical polymerization of a perylene diimide-containing acrylate. The targeted donor-acceptor diblock copolymers were prepared with low-to-moderate polydispersity indices ( 1.2-1.4) and molecular weights sufficiently high for producing films by spin-coating. These copolymers showed efficient photoluminescence quenching in the solid state, indicative of charge separation, and were Used to produce a solar cell with power conversion efficiency of 0.49%.

Subject Keywords

Morphology, Mobility, Regioregular Poly(3-Hexylthiophene), Grignard Metathesis, Polymer Photovoltaic Cells, Diblock Copolymers, Block-Copolymers, Triblock Copolymers, Polythiophene

URI

https://hdl.handle.net/11511/37493

Collections

Department of Chemistry, Article