Thiophene-based copolymers synthesized by electropolymerization for application as hole transport layer in organic solar cells

Triantou, D; Soulis, S; Koureli, S; De Sio, A; Von Hauff, E

dc.contributor.author	Triantou, D	en
dc.contributor.author	Soulis, S	en
dc.contributor.author	Koureli, S	en
dc.contributor.author	De Sio, A	en
dc.contributor.author	Von Hauff, E	en
dc.date.accessioned	2014-03-01T11:47:19Z
dc.date.available	2014-03-01T11:47:19Z
dc.date.issued	2012	en
dc.identifier.issn	00218995	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/38125
dc.subject	Conducting polymers	en
dc.subject	Copolymers	en
dc.subject	Hole transport layer	en
dc.subject	Polythiophene	en
dc.subject	Solar cells	en
dc.title	Thiophene-based copolymers synthesized by electropolymerization for application as hole transport layer in organic solar cells	en
heal.type	other	en
heal.identifier.primary	10.1002/app.37831	en
heal.identifier.secondary	http://dx.doi.org/10.1002/app.37831	en
heal.publicationDate	2012	en
heal.abstract	Electrically conducting thiophene-based copolymers were synthesized by electropolymerization. The potential range used has a strong influence on the film structure and properties. The extent of oxidation of the copolymers was determined from the ratio of the oxidation to reduction charge, Qox/Qred. The use of wide potential range leads to reduced films, whereas the narrow range leads to partially oxidized films. The copolymers exhibit a characteristic band in UV-vis spectra at ∼ 410 nm, which shifts to higher wavelengths for the more doped material. The electrical conductivity of the copolymers was correlated to their morphology and their structure. The copolymer with higher conductivity is partially reduced, has compact morphology and higher ratio of quinoid to benzenoid rings. The energy gap of the copolymers is reversely proportional to their electrical conductivity. The optical and electrical properties of the copolymers make them very well suited for use as hole transport layers (HTL) in organic opto-electronic devices. We prepared polymer fullerene solar cells with copolymer HTLs. The solar cell performance was tested with very encouraging initial results. © 2012 Wiley Periodicals, Inc.	en
heal.journalName	Journal of Applied Polymer Science	en
dc.identifier.doi	10.1002/app.37831	en