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An alternative method to build organic photodiodes
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, The Institute of Technology.
2004 (English)In: Synthetic metals, ISSN 0379-6779, Vol. 140, no 2-3, 281-286 p.Article in journal (Refereed) Published
Abstract [en]

We demonstrate a new method to build inverted organic photodiodes with highly conducting polymer anodes. In the inverted design the cathode is deposited first, followed by the deposition of the active material and finally the anode. A cathode of bismuth was vacuum evaporated followed by the evaporation of a capping layer of C60. A semiconducting polymer, poly(3-(4'-(1?,4?,7?-trioxaoctyl)phenyl)thiophene) (PEOPT) was then spin-coated on the cathode, followed by a surface energy modification step and a subsequent spin-coating of the anode, a solution of glycerol and the conducting polymer poly(3,4-ethylenedioxythiophene) with the polyelectrolyte poly(4-styrenesulfonate) (PEDOT-PSS). As the pristine PEOPT was too hydrophobic to spin-coat the aqueous based PEDOT-PSS, the semiconducting polymer was silanized with 3-glycidoxypropyltrimethoxysilane to increase its surface energy before spin-coating of the PEDOT-PSS solution. The device geometry was proven successful by current-voltage measurements of devices in dark and under illumination. © 2003 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
2004. Vol. 140, no 2-3, 281-286 p.
Keyword [en]
Bismuth, Conductive polymer, Organic photodiodes, Semiconducting polymer, Silanization
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-45816DOI: 10.1016/S0379-6779(03)00375-8OAI: oai:DiVA.org:liu-45816DiVA: diva2:266712
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2012-01-07

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