Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/1952
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dc.contributor.authorGORIS, Ludwig-
dc.contributor.authorPoruba, A-
dc.contributor.authorPurkrt, A-
dc.contributor.authorVANDEWAL, Koen-
dc.contributor.authorSWINNEN, Ann-
dc.contributor.authorHAELDERMANS, Ilse-
dc.contributor.authorHAENEN, Ken-
dc.contributor.authorMANCA, Jean-
dc.contributor.authorVanecek, M-
dc.date.accessioned2007-11-09T09:52:57Z-
dc.date.available2007-11-09T09:52:57Z-
dc.date.issued2006-
dc.identifier.citationJOURNAL OF NON-CRYSTALLINE SOLIDS, 352(9-20). p. 1656-1659-
dc.identifier.issn0022-3093-
dc.identifier.urihttp://hdl.handle.net/1942/1952-
dc.description.abstractOrganic bulk heterojunction solar cells enjoy a well established reputation, reaching conversion efficiencies up to 4% at present. Information on electronic states in the gap, whether or not connected with defects, that can influence the power conversion efficiency, are still lacking. A photoelectrical study of the optical absorption processes in encapsulated cells is presented. Fourier-transform photocurrent spectroscopy is used to measure the transitions connected with free charge carrier generation. The dynamic range obtained with this method reaches over at least eight orders of magnitude. Measurements on solar cells with an active layer of MDMO-PPV:PCBM (1:4 weight ratio) enabled a study of the intrinsic defect generation due to UV-illumination. Temperature annealing effects in P3HT:PCBM (1:2 weight ratio) cells and the induced morphological changes are related with the changes in absorption spectrum. These morphological changes were separately probed with optical and transmission electron microscopy. (c) 2006 Elsevier B.V. All rights reserved.-
dc.languageEnglish-
dc.language.isoen-
dc.publisherELSEVIER SCIENCE BV-
dc.subject.othersolar cells; composition; photovoltaics; band structure; optical spectroscopy; STEM/TEM; defects; nano-composites; absorption; FTIR measurements; polymers and organics; defects-
dc.titleOptical absorption by defect states in organic solar cells-
dc.typeJournal Contribution-
dc.identifier.epage1659-
dc.identifier.issue9-20-
dc.identifier.spage1656-
dc.identifier.volume352-
local.format.pages4-
local.bibliographicCitation.jcatA1-
dc.description.notesHasselt Univ, Mat Res Inst, B-3590 Diepenbeek, Belgium. Acad Sci Czech Republ, Inst Phys, CR-16200 Prague 6, Czech Republic. IMEC VZW, Div IMOMEC, B-3590 Diepenbeek, Belgium.Goris, L, Hasselt Univ, Mat Res Inst, Wetenschapspk 1, B-3590 Diepenbeek, Belgium.ludwig.goris@uhasselt.be-
local.type.refereedRefereed-
local.type.specifiedArticle-
dc.bibliographicCitation.oldjcatA1-
dc.identifier.doi10.1016/j.jnoncrysol.2005.09.053-
dc.identifier.isi000238782900189-
item.validationecoom 2007-
item.fulltextNo Fulltext-
item.accessRightsClosed Access-
item.fullcitationGORIS, Ludwig; Poruba, A; Purkrt, A; VANDEWAL, Koen; SWINNEN, Ann; HAELDERMANS, Ilse; HAENEN, Ken; MANCA, Jean & Vanecek, M (2006) Optical absorption by defect states in organic solar cells. In: JOURNAL OF NON-CRYSTALLINE SOLIDS, 352(9-20). p. 1656-1659.-
item.contributorMANCA, Jean-
item.contributorVANDEWAL, Koen-
item.contributorPoruba, A-
item.contributorHAENEN, Ken-
item.contributorSWINNEN, Ann-
item.contributorHAELDERMANS, Ilse-
item.contributorGORIS, Ludwig-
item.contributorPurkrt, A-
item.contributorVanecek, M-
crisitem.journal.issn0022-3093-
crisitem.journal.eissn1873-4812-
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