Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/18255
DC FieldValueLanguage
dc.contributor.authorKeivanidis, Panagiotis E.-
dc.contributor.authorLaquai, Frédéric-
dc.contributor.authorHoward, Ian A.-
dc.contributor.authorFriend, Richard H.-
dc.date.accessioned2020-04-10T18:08:31Z-
dc.date.available2020-04-10T18:08:31Z-
dc.date.issued2011-04-22-
dc.identifier.citationAdvanced Functional Materials, 2011, vol. 21, iss. 8, pp. 1355-1363en_US
dc.identifier.issn1616301X-
dc.description.abstractHerein, we address the reduction in the external quantum efficiency (EQE) of solution-processed organic photodetectors caused by the room temperature phase demixing of components in the composite material of the photoactive layer. The reduction takes place under ambient conditions and after the completion of device fabrication. As a model system, we study photoactive blend films that consist of the electron acceptor N,N'-bis(alkyl)-3,4,9,10-perylene tetracarboxylic diimide) (PDI) and the electron donor polymer poly(9,9'-dioctylfluorene-co-benzothiadiazole) (F8BT). The ambient ageing of these photoactive layers is a consequence of the PDI component segregation; however, the final PDI domain size remains smaller than the resolution limit of optical microscopy. We find that the photophysical properties of the aged F8BT:PDI layer and the EQE of the aged device are significantly altered. The fabrication of F8BT:PDI layers from solvents of increasing boiling point allows for the spectroscopic monitoring of the ageing-induced phase segregation (a-PSG) process. For each solvent used, the extent of a-PSG is correlated with the PDI dispersion in the F8BT matrix as received immediately after layer deposition. The tendency for room temperature phase demixing becomes stronger as PDI is more finely dispersed in the freshly spun F8BT:PDI layer. The evolution of the room temperature phase segregation of PDI has a negative impact on the photophysical processes that are essential for charge photogeneration in the F8BT:PDI photoactive layer. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.en_US
dc.formatpdfen_US
dc.language.isoenen_US
dc.relation.ispartofAdvanced Functional Materialsen_US
dc.rights© Wileyen_US
dc.subjectperylene diimideen_US
dc.subjectphase segregationen_US
dc.subjectphotodetectorsen_US
dc.subjectsolar cellsen_US
dc.subjectstabilityen_US
dc.titleRoom-temperature phase demixing in bulk heterojunction layers of solution-processed organic photodetectors: The effect of active layer ageing on the device electro-optical propertiesen_US
dc.typeArticleen_US
dc.collaborationUniversity of Cambridgeen_US
dc.collaborationItalian Institute of Technologyen_US
dc.collaborationMax Planck Instituteen_US
dc.subject.categoryElectrical Engineering - Electronic Engineering - Information Engineeringen_US
dc.journalsSubscriptionen_US
dc.countryUnited Kingdomen_US
dc.countryItalyen_US
dc.countryGermanyen_US
dc.subject.fieldEngineering and Technologyen_US
dc.publicationPeer Revieweden_US
dc.identifier.doi10.1002/adfm.201002214en_US
dc.identifier.scopus2-s2.0-79954537711-
dc.identifier.urlhttps://api.elsevier.com/content/abstract/scopus_id/79954537711-
dc.relation.issue8en_US
dc.relation.volume21en_US
cut.common.academicyear2010-2011en_US
dc.identifier.spage1355en_US
dc.identifier.epage1363en_US
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.grantfulltextnone-
item.cerifentitytypePublications-
item.fulltextNo Fulltext-
item.languageiso639-1en-
item.openairetypearticle-
crisitem.author.deptDepartment of Mechanical Engineering and Materials Science and Engineering-
crisitem.author.facultyFaculty of Engineering and Technology-
crisitem.author.orcid0000-0002-5336-249X-
crisitem.author.parentorgFaculty of Engineering and Technology-
crisitem.journal.journalissn1616-3028-
crisitem.journal.publisherWiley-
Appears in Collections:Άρθρα/Articles
CORE Recommender
Show simple item record

SCOPUSTM   
Citations

19
checked on Mar 14, 2024

WEB OF SCIENCETM
Citations

17
Last Week
0
Last month
0
checked on Oct 29, 2023

Page view(s)

265
Last Week
2
Last month
11
checked on May 21, 2024

Google ScholarTM

Check

Altmetric


Items in KTISIS are protected by copyright, with all rights reserved, unless otherwise indicated.