Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/18491
Title: Nafion-Modified MoOx as Effective Room-Temperature Hole Injection Layer for Stable, High-Performance Inverted Organic Solar Cells
Authors: Qiu, Weiming
Müller, Robert
Voroshazi, Eszter
CONINGS, Bert 
CARLEER, Robert 
BOYEN, Hans-Gerd 
Turbiez, Mathieu
Froyen, Ludo
Heremans, Paul
Hadipour, Afshin
Issue Date: 2015
Source: ACS Applied Materials & Interfaces, 7 (6), p. 3581-3589
Abstract: We present a hole injection layer processed from solution at room temperature for inverted organic solar cells. Bis(2,4-pentanedionato) molybdenum(VI) dioxide (MoO2(acac)(2)) is used as the precursor for MoOx. Small amounts of Nafion in the precursor solution allow it to form continuous films with good wetting onto the active layers. The hydrolysis of MoO2(acac)(2) and the effects of adding Nafion to the precursor solution are studied by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The devices with solution-processed MoOx including Nafion exhibited comparable performance to the reference devices based on the commonly used hole injection layers such as poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) or evaporated MoO3. Inverted poly(3-hexylthiophene):[6,6]-phenyl C61-butyric acid methyl ester devices with Nafion-modified MoOx maintain 80% of their initial power conversion efficiency upon exposure to ambient air for similar to 5000 h, outperforming devices with PEDOT:PSS or with evaporated MoO3.
Notes: E-mail Addresses:Weiming.Qiu@imec.be
Keywords: Nafion; MoOx; hole injection layer; inverted solar cells; stability
Document URI: http://hdl.handle.net/1942/18491
ISSN: 1944-8244
e-ISSN: 1944-8252
DOI: 10.1021/am507459t
ISI #: 000349806800017
Rights: © 2015 American Chemical Society.
Category: A1
Type: Journal Contribution
Validations: ecoom 2016
Appears in Collections:Research publications

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