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Influence of dopant on the electronic structure of spiro-oligophenyl-based disordered organic semiconductors
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Surface Physics and Chemistry .
Linköping University, The Institute of Technology. Linköping University, Department of Science and Technology.ORCID iD: 0000-0001-8845-6296
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Surface Physics and Chemistry .
Dos Santos, D.A., Service de Chimie des Matériaux Nouveaux, Centre de Recherche en Electronique et Photonique Moléculaires, Université de Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium.
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2002 (English)In: Journal of Chemical Physics, ISSN 0021-9606, Vol. 116, no 18, 8159-8167 p.Article in journal (Refereed) Published
Abstract [en]

The influence of the dopant on the electronic structure of spiro-oligophenyl-based disordered organic semiconductors was studied by means of photoelectron spectroscopy. With lithium atoms as dopants, two charges were stored on the same spiro branch in the form of bipolarons, for spiro-quarterphenyl and spiro-sexiphenyl. For doping with the sodium atoms, the size of the counter ions made it less energetically desirable to store two charges onto a single branch, and the charged species were polarons independent of the level of doping which was confirmed by optical absorption data.

Place, publisher, year, edition, pages
2002. Vol. 116, no 18, 8159-8167 p.
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Engineering and Technology
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URN: urn:nbn:se:liu:diva-47017DOI: 10.1063/1.1465408OAI: oai:DiVA.org:liu-47017DiVA: diva2:267913
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2013-09-12

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Crispin, AnnicaCrispin, XavierFahlman, MatsSalaneck, William R

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