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Hall-effect measurements probing the degree of charge-carrier delocalization in solution-processed crystalline molecular semiconductors
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Chang, Jui-Fen, Sakanoue, Tomo, Olivier, Yoann, Uemura, Takafumi, Dufourg-Madec, Marie-Beatrice, Yeates, Stephen, Cornil, Jérôme, Takeya, Jun, Troisi, Alessandro and Sirringhaus, Henning (2011) Hall-effect measurements probing the degree of charge-carrier delocalization in solution-processed crystalline molecular semiconductors. Physical Review Letters, Vol.107 (No.6). Article 066601 . doi:10.1103/PhysRevLett.107.066601 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.107.066601
Abstract
Intramolecular structure and intermolecular packing in crystalline molecular semiconductors should have profound effects on the charge-carrier wave function, but simple drift mobility measurements are not very sensitive to this. Here we show that differences in the Hall resistance of two soluble pentacene derivatives can be explained with different degrees of carrier delocalization being limited by thermal lattice fluctuations. A combination of Hall measurements, optical spectroscopy, and theoretical simulations provides a powerful probe of structure-property relationships at a molecular level.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry Faculty of Science, Engineering and Medicine > Science > Computer Science |
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| Library of Congress Subject Headings (LCSH): | Hall effect, Superconductors, Organic semiconductors, Wave functions, Molecular crystals | ||||
| Journal or Publication Title: | Physical Review Letters | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 0031-9007 | ||||
| Official Date: | August 2011 | ||||
| Dates: |
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| Volume: | Vol.107 | ||||
| Number: | No.6 | ||||
| Page Range: | Article 066601 | ||||
| DOI: | 10.1103/PhysRevLett.107.066601 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), Technology Strategy Board (Great Britain), Fonds national de la recherche scientifique (Belgium) (FNRS) |
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