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Influence of dopant on the electronic structure of spiro-oligophenyl-based disordered organic semiconductors

Crispin, Annica (author)
Linköpings universitet,Tekniska högskolan,Ytors Fysik och Kemi
Crispin, Xavier (author)
Linköpings universitet,Tekniska högskolan,Institutionen för teknik och naturvetenskap
Fahlman, Mats (author)
Linköpings universitet,Tekniska högskolan,Ytors Fysik och Kemi
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Dos, Santos D.A. (author)
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
Cornil, J. (author)
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
Johansson, N. (author)
Bauer, J. (author)
Covion Organic Semiconductors GmbH, Industrial Park Hoechst, D-65926 Frankfurt, Germany
Weissortel, F. (author)
Weissörtel, F., Electrochemistry and Optoelectronic Materials, FB 6, University Duisburg, D-47048 Duisburg, Germany
Salbeck, J. (author)
Electrochemistry and Optoelectronic Materials, FB 6, University Duisburg, D-47048 Duisburg, Germany, Macromolecular Chemistry and Molecular Materials, FB 18, University Kassel, D-34132 Kassel, Germany
Bredas, J.L. (author)
Brédas, J.L., 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, Department of Chemistry, University of Arizona, Tucson, AZ 85721-0041, United States
Salaneck, William R (author)
Linköpings universitet,Tekniska högskolan,Ytors Fysik och Kemi
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 (creator_code:org_t)
AIP Publishing, 2002
2002
English.
In: Journal of Chemical Physics. - : AIP Publishing. - 0021-9606 .- 1089-7690. ; 116:18, s. 8159-8167
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • 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.

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TECHNOLOGY
TEKNIKVETENSKAP

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