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TitleMesoscopic study of the electronic properties of thin polymer films
Author(s)Ribeiro, R. M.
Ramos, Marta M. D.
Almeida, A. M.
Correia, Helena M. G.
Silva, Jaime
Stoneham, A. M.
Issue date2003
PublisherMaterials Research Society (MRS)
JournalMaterials Research Society Symposium Proceedings
CitationMATERIALS RESEARCH SOCIETY, Fall, Boston, 2002 - "Materials Research Society". [Warrendale] : MRS, 2003. p. 549-554.
Abstract(s)Conjugated polymers are very interesting for light emitting diodes. Further improvement in device performance requires a better understanding on the correlation between the polymer structure and device characteristics. A mesoscopic study using a generalised Monte Carlo method of bipolar charge transport in thin poly(p-phenylene-vinylene) (PPV) films is presented in this paper. We show that energy and spatial molecular disorder have a serious influence on migration of charge carriers within the polymer layer. The transfer of carriers between two polymer chains is made dependent on the chemical potential difference as well as on other features such as the distance between both molecules involved and the direction of the electric field. The purpose of the present work is to clarify the effects of local energy and polymer structural disorder on current flow, trapping and recombination on polymer based devices.
TypeConference paper
Publisher version
AccessOpen access
Appears in Collections:CDF - FCT - Artigos/Papers (with refereeing)

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