The chemical and structural origin of efficient p-type doping in P3HT
| Autor: | Duc T. Duong, Alberto Salleo, Michael F. Toney, Chenchen Wang, Erin Antono |
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| Rok vydání: | 2013 |
| Předmět: |
Organic electronics
Materials science Dopant Doping General Chemistry Condensed Matter Physics Dissociation (chemistry) Electronic Optical and Magnetic Materials Biomaterials Organic semiconductor Chemical state Materials Chemistry Organic chemistry Physical chemistry Molecule Electrical and Electronic Engineering Thin film |
| Zdroj: | Organic Electronics. 14:1330-1336 |
| ISSN: | 1566-1199 |
| Popis: | We investigate the chemical and structural properties of solution-processed thin films of P3HT blended with p-type dopant F4TCNQ. The maximum in-plane electrical conductivity of doped films is observed at a molar doping fraction of 0.17, in agreement with the binding mechanism of F4TCNQ:P3HT complexes. Through the use of X-ray diffraction, a previously unreported crystalline phase is observed for P3HT films doped above a critical threshold concentration. This crystalline phase involves the incorporation of F4TCNQ molecules into ordered polymer regions and ultimately improves charge dissociation, leading to higher carrier density in thin film. Finally, optical absorption and X-ray diffraction reveal that the chemical state of P3HT in solution has a dramatic impact on the electrical and structural properties of the blended films. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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