Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/23206
Title: Steering the Properties of MoOx Hole Transporting Layers in OPVs and OLEDs: Interface Morphology vs. Electronic Structure
Authors: MARCHAL, Wouter 
VERBOVEN, Inge 
KESTERS, Jurgen 
MOEREMANS, Boaz 
De Dobbelaere, Christopher
BONNEUX, Gilles 
ELEN, Ken 
CONINGS, Bert 
MAES, Wouter 
BOYEN, Hans-Gerd 
DEFERME, Wim 
VAN BAEL, Marlies 
HARDY, An 
Issue Date: 2017
Source: Materials, 10(2) (Art N° 123)
Abstract: The identification, fine-tuning, and process optimization of appropriate hole transporting layers (HTLs) for organic solar cells is indispensable for the production of efficient and sustainable functional devices. In this study, the optimization of a solution-processed molybdenum oxide (MoOx) layer fabricated from a combustion precursor is carried out via the introduction of zirconium and tin additives. The evaluation of the output characteristics of both organic photovoltaic (OPV) and organic light emitting diode (OLED) devices demonstrates the beneficial influence upon the addition of the Zr and Sn ions compared to the generic MoOx precursor. A dopant effect in which the heteroatoms and the molybdenum oxide form a chemical identity with fundamentally different structural properties could not be observed, as the additives do not affect the molybdenum oxide composition or electronic band structure. An improved surface roughness due to a reduced crystallinity was found to be a key parameter leading to the superior performance of the devices employing modified HTLs.
Notes: Hardy, A (reprint author), Hasselt Univ, Inst Mat Res IMO IMOMEC Inorgan & Phys Chem, Martelarenlaan 42, B-3500 Hasselt, Belgium. wouter.marchal@uhasselt.be; Inge.verboven@uhasselt.be; Jurgen.kesters@uhasselt.be; Boaz.Moeremans@uhasselt.be; Christopher.dedobbelaere@uhasselt.be; Gilles.Bonneux@uhasselt.be; Ken.elen@uhasselt.be; Bert.Conings@uhasselt.be; Wouter.Maes@uhasselt.be; Hansgerd.boyen@uhasselt.be; Wim.Deferme@uhasselt.be; Marlies.vanbael@uhasselt.be; An.Hardy@uhasselt.be
Keywords: hole transporting layer; molybdenum oxide; organic photovoltaics; additives; morphology
Document URI: http://hdl.handle.net/1942/23206
e-ISSN: 1996-1944
DOI: 10.3390/ma10020123
ISI #: 000395445800030
Rights: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
Category: A1
Type: Journal Contribution
Validations: ecoom 2018
Appears in Collections:Research publications

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