Acceptor-donor-acceptor small molecules based on derivatives of 3,4-ethylenedioxythiophene for solution processed organic solar cells

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dc.contributor.authorAntwi, B.Y.
dc.contributor.authorTaylor, R.G.D.
dc.contributor.authorCameron, J.
dc.contributor.authorOwoare, R.B.
dc.contributor.authorKingsford-Adaboh, R.
dc.contributor.authorSkabara, P.J.
dc.date.accessioned2019-04-29T15:25:47Z
dc.date.available2019-04-29T15:25:47Z
dc.date.issued2016
dc.description.abstractThree simple semiconducting acceptor-donor-acceptor (A-D-A) small molecules based on an electron-rich (3,4-ethylenedioxythiophene) EDOT central core have been synthesised (DIN-2TE, DRH-2TE, DECA-2TE) and characterised. Organic photovoltaic (OPV) devices incorporating these materials have been prepared and evaluated. The physical properties of the molecules were characterised by TGA, DSC, UV/vis spectroscopy and cyclic voltammetry. The optical HOMO-LUMO energy gaps of the molecules in the solid state were in the range 1.57-1.82 eV, and in solution 1.88-2.04 eV. Electrochemical HOMO-LUMO energy gaps determined by cyclic voltammetry were found to be in the range 1.97-2.31 eV. The addition of 1% 1,8-diiodooctane (DIO) to photoactive blends of the A-D-A molecules and PC71BM more than doubled the power conversion efficiency (PCE) in the case of DRH-2TE:PC71BM devices to 1.36%. © 2016 The Royal Society of Chemistry.en_US
dc.identifier.issn20462069
dc.identifier.otherdoi.10.1039/c6ra22897f
dc.identifier.othervol.6,101
dc.identifier.urihttp://ugspace.ug.edu.gh/handle/123456789/29650
dc.language.isoenen_US
dc.publisherRoyal Society of Chemistryen_US
dc.titleAcceptor-donor-acceptor small molecules based on derivatives of 3,4-ethylenedioxythiophene for solution processed organic solar cellsen_US
dc.typeArticleen_US

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