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Efficient ternary organic solar cells based on immiscible blends
Inst Super Tecn, Inst Telecomunicacoes, Av Rovisco Pais, P-1049001 Lisbon, Portugal..
Inst Super Tecn, Inst Telecomunicacoes, Av Rovisco Pais, P-1049001 Lisbon, Portugal..
Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), Institutionen för ingenjörsvetenskap och fysik (from 2013).ORCID-id: 0000-0002-4745-1074
Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), Institutionen för ingenjörsvetenskap och fysik (from 2013).
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2017 (engelsk)Inngår i: Organic electronics, ISSN 1566-1199, E-ISSN 1878-5530, Vol. 41, s. 130-136Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Organic photovoltaic cells based on ternary blends of materials with complementary properties represent an approach to improve the photon-absorption and/or charge transport within the devices. However, the more complex nature of the ternary system, i.e. in diversity of materials' properties and morphological features, complicates the understanding of the processes behind such optimizations. Here, organic photovoltaic cells with wider absorption spectrum composed of two electron-donor polymers, F8T2, poly(9,9-dioctylfluorene-alt-bithiophene), and PTB7, poly([4,8-bis[(2'-ethylhexyl) oxy] benzo[1,2-b: 4,5-b'] dithiophene-2,6-diyl][3-fluoro-2-[(2'-ethylhexyl) carbonyl] thieno[3,4-b] thiophenediyl]), mixed with [6,6]-phenyl-C-61-butyric acid methyl ester (PC61BM) are investigated. We demonstrate an improvement of 25% in power conversion efficiency in comparison with the most efficient binary blend control devices. The active layers of these ternary cells exhibit gross phase separation, as determined by Atomic Force Microscopy (AFM) and Synchrotron-based Scanning Transmission X-ray Microscopy (STXM).

sted, utgiver, år, opplag, sider
Elsevier, 2017. Vol. 41, s. 130-136
Emneord [en]
Polymer solar cells, Photovoltaics, Ternary blend, Morphology, High efficiency
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Identifikatorer
URN: urn:nbn:se:kau:diva-62620DOI: 10.1016/j.orgel.2016.12.009ISI: 000390586300017OAI: oai:DiVA.org:kau-62620DiVA, id: diva2:1130697
Tilgjengelig fra: 2017-08-10 Laget: 2017-08-10 Sist oppdatert: 2019-09-19bibliografisk kontrollert

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