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Interface formation between poly(2,5-diheptyl-p-phenylenevinylene) and calcium: implications for light-emitting diodes
Linköpings universitet, Institutionen för fysik, kemi och biologi. Linköpings universitet, Tekniska högskolan.
Linköpings universitet, Institutionen för fysik, kemi och biologi. Linköpings universitet, Tekniska högskolan.ORCID-id: 0000-0001-9879-3915
Linköpings universitet, Institutionen för fysik, kemi och biologi. Linköpings universitet, Tekniska högskolan.
National Institute of Materials and Chemical Research, Tsukuba, Ibaraki 305, Japan.
Vise andre og tillknytning
1994 (engelsk)Inngår i: Synthetic metals, ISSN 0379-6779, E-ISSN 1879-3290, Vol. 67, nr 1-3, s. 133-136Artikkel i tidsskrift (Fagfellevurdert) Published
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Abstract [en]

The early stages of metal/polymer interface formation between calcium and poly(2,5-diheptyl-p-phenylenevinylene) (PDHPV) have been studied using both X-ray photoelectron spectroscopy and ultraviolet photoelectron spectroscopy. Charge transfer is observed from the metal atoms to the polymer; as a result the calcium atoms at the interface are ionic, and negative bipolarons appear as the charge-carrying species on the polymer chains. This n-type doping of PDHPV by calcium leads to the appearance of new electronic states in the polymer bandgap. The calcium atoms appear to diffuse into the near surface region of the polymer, rather than forming a well-defined overlayer on the organic films.

sted, utgiver, år, opplag, sider
Elsevier, 1994. Vol. 67, nr 1-3, s. 133-136
Emneord [en]
Interface, Diodes, Poly(2, 5-diheptyl-p-phenylenevinylene), Calcium
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Identifikatorer
URN: urn:nbn:se:liu:diva-124174DOI: 10.1016/0379-6779(94)90026-4ISI: A1994PW12000024OAI: oai:DiVA.org:liu-124174DiVA, id: diva2:896169
Konferanse
Symposium D on Organic Materials for Electronics - Polymer Interfaces with Metals and Semiconductors, at the 1994 E-MRS Spring Conference, Strasbourg, France, May 24-27, 1994
Tilgjengelig fra: 2016-01-20 Laget: 2016-01-20 Sist oppdatert: 2017-11-30bibliografisk kontrollert

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