Document Server@UHasselt >
Research >
Research publications >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/17662

Title: Ultrathin Ammonium Heptamolybdate Films as Efficient Room- Temperature Hole Transport Layers for Organic Solar Cells
Authors: Qiu, Weiming
Hadipour, Afshin
Müller, Robert
BOYEN, Hans-Gerhard
Heremans, Paul
Froyen, Ludo
Issue Date: 2014
Citation: ACS Applied Materials & Interfaces, 6 (18), p. 16335-16343
Abstract: Ammonium heptamolybdate (NH4)6Mo7O24·4H2O (AHM) and its peroxo derivatives are analyzed as solution-processed room temperature hole transport layer (HTL) in organic solar cells. Such AHM based HTLs are investigated in devices with three different types of active layers, i.e., solution-processed poly(3-hexylthiophene)/[6,6]-phenyl C61-butyric acid methyl ester(P3HT/PC60BM), poly[N-9′-heptadecanyl-2,7-carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′,3′-benzothiadiazole)]/[6,6]-phenyl C70-butyric acid methyl ester-(PCDTBT/PC70BM) and evaporated small molecule chloro-(subphthalocyaninato)boron(III) (SubPc)/C60. By virtue of their high work functions, AHM based HTLs outperform the commonly used poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) HTL for devices employing deep HOMO level active materials. Moreover, devices using AHM based HTLs can achieve higher short circuit current (Jsc) than the ones with evaporated molybdenum oxide(eMoO3), and thus better power conversion efficiency (PCE). In addition, P3HT/ PC60BM devices with AHM based HTLs show air stability comparable to those with eMoO3, and much better than the ones with PEDOT:PSS.
Notes: Qiu, WM (reprint author), IMEC, Kapeldreef 75, B-3001 Heverlee, Belgium. Weiming.Qiu@imec.be
URI: http://hdl.handle.net/1942/17662
DOI: 10.1021/am504606u
ISI #: 000342328300086
ISSN: 1944-8244
Category: A1
Type: Journal Contribution
Validation: ecoom, 2015
Appears in Collections: Research publications

Files in This Item:

Description SizeFormat
main article2.88 MBAdobe PDF

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.