Please use this identifier to cite or link to this item:
|Title:||The effect of organic and metal oxide interfacial layers on the performance of inverted organic photovoltaics||Authors:||Savva, Achilleas
Voigt, Monika M.
Nelson, Jenny M.
Bradley, Donal D.C.
Brabec, Christoph J.
Choulis, Stelios A.
|Major Field of Science:||Engineering and Technology||Field Category:||Mechanical Engineering||Keywords:||Organic photovoltaics;Interfacial layer||Issue Date:||Mar-2013||Source:||Advanced Energy Materials, 2013, vol. 3, no. 3, pp. 391-398||Volume:||3||Issue:||3||Start page:||391||End page:||398||Journal:||Advanced Energy Materials||Abstract:||We study the origin of the improvement of the power conversion effi ciency (PCE) of inverted organic solar cells when an interfacial insulating organic layer of polyoxyethylene tridecyl ether (PTE) is introduced between the indium tin oxide (ITO) bottom electrode and the TiOx interfacial layer. XPS and UPS measurements are used to investigate the energy level alignment at the interfaces within the ITO/TiOx and ITO/PTE/TiOx structures and to identify any effects due to chemical interaction and interfacial dipoles. Scanning electron microscopy studies show that the surface structure of the TiOx layer is affected, when it is coated on top of the PTE layer. Surface contact angle measurements show that the incorporated interfacial layer of PTE is more hydrophilic than ITO and thus PTE modifi ed TiO x becomes more hydrophilic. This, in combination with the surface gaps of the PTE interfacial layer, is likely to lead to changed wetting and hydrolysis properties of TiOx when coated on ITO/PTE than on ITO alone. The different TiOx layer quality is refl ected in improved electron selectivity, leading to enhanced fi ll factor, reduced parasitic resistance effects and higher power conversion effi ciency for inverted solar cells with a PTE interfacial layer between ITO and TiOx.||URI:||https://hdl.handle.net/20.500.14279/9938||ISSN:||1614-6832||DOI:||10.1002/aenm.201200317||Rights:||© WILEY||Type:||Article||Affiliation :||Cyprus University of Technology
University of Patras
Institute of Chemical Engineering and High Temperature Chemical Processes
Friedrich-Alexander University Erlangen-Nuremberg
Imperial College London
University of Oxford
|Appears in Collections:||Άρθρα/Articles|
checked on Nov 9, 2023
WEB OF SCIENCETM
checked on Oct 29, 2023
checked on Dec 1, 2023
Items in KTISIS are protected by copyright, with all rights reserved, unless otherwise indicated.