Influence of dopant on the electronic structure of spiro-oligophenyl-based disordered organic semiconductors
2002 (English)In: Journal of Chemical Physics, ISSN 0021-9606, Vol. 116, no 18, 8159-8167 p.Article in journal (Refereed) Published
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.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-47017DOI: 10.1063/1.1465408OAI: oai:DiVA.org:liu-47017DiVA: diva2:267913