Solution processable tungsten polyoxometalate as highly effective cathode interlayer for improved efficiency and stability polymer solar cells

dc.contributor.author	Παλίλης, Λεωνίδας Χ.	el
dc.contributor.author	Βασιλοπούλου., Μαρία	el
dc.contributor.author	Δούβας, Αντώνιος Μ.	el
dc.contributor.author	Γεωργιάδου, Δήμητρα Γ.	el
dc.contributor.author	Κέννου, Στέλλα	el
dc.date.accessioned	2015-05-17T17:02:06Z
dc.date.available	2015-05-17T17:02:06Z
dc.date.issued	2015-05-17
dc.identifier.uri	http://hdl.handle.net/11400/10602
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.source	http://www.sciencedirect.com/science/article/pii/S092702481300113X#	el
dc.subject	Polymer solar cells
dc.subject	Πολυμερές ηλιακά κύτταρα
dc.subject	Tungsten polyoxometalate (PW12-POM)
dc.subject	Electron extraction layer
dc.subject	Optical spacer
dc.subject	Οπτικός αποστάτης
dc.subject	Optical simulations
dc.subject	Οπτικές προσομοιώσεις
dc.title	Solution processable tungsten polyoxometalate as highly effective cathode interlayer for improved efficiency and stability polymer solar cells	en
heal.type	journalArticle
heal.classification	Technology
heal.classification	Electronics
heal.classification	Τεχνολογία
heal.classification	Ηλεκτρονική
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85133147
heal.classificationURI	http://zbw.eu/stw/descriptor/10455-2
heal.classificationURI	N/A-Τεχνολογία
heal.classificationURI	N/A-Ηλεκτρονική
heal.contributorName	Σταθόπουλος, Νικόλαος Α.	el
heal.contributorName	Κωνσταντινούδης, Βασίλειος	el
heal.contributorName	Αργίτης, Παναγιώτης	el
heal.identifier.secondary	doi:10.1016/j.solmat.2013.02.034
heal.language	en
heal.access	campus
heal.publicationDate	2013-07
heal.bibliographicCitation	Kiekkas, P., Vasilopoulou, M., Douvas, A. M., Georgiadou, D. G., Kennou, S., et.al. (2013) Solution processable tungsten polyoxometalate as highly effective cathode interlayer for improved efficiency and stability polymer solar cells. "Solar Energy Materials and Solar Cells". 114. p. 205-213. Available from: http://www.sciencedirect.com/science/article/pii/S092702481300113X#. [Accessed 13/04/2013]	en
heal.abstract	We report for the first time the use of a water-soluble, tungsten polyoxometalate H3PW12O40 (PW12-POM) as an efficient cathode interlayer incorporated into poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM-61) polymer solar cells. The short circuit photocurrent density of the PW12-POM modified device is enhanced by ∼40% the open circuit voltage increases from 0.61 V to 0.65 V and the fill factor from 0.36 to 0.41, resulting to a power conversion efficiency enhancement of ∼70% (from 1.57% for the reference to 2.7% for the PW12-POM modified device). The improvement is attributed to enhanced electron transfer/extraction at the PW12-POM/Al interface as a result of the favorable interfacial energy level alignment and possible enhancement of the local electric field due to the nanoscale morphology of the PW12-POM layer, as evidenced by AFM measurements. A reduced degradation rate was measured for PW12-POM modified devices stored in dark and measured in ambient conditions. Taking into account the advantageous solution processability of PW12-POM, the large increase in the device efficiency and the improvement of their stability, we manifest that PW12-POM has highly desirable properties in order to be embedded as cathode interlayer in organic photovoltaic cells.	en
heal.journalName	Solar Energy Materials and Solar Cells	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true