High fill factor polymer solar cells incorporating a low temperature solution processed WO3 hole extraction layer
Stubhan T, Li N, Luechinger NA, Halim SC, Matt G, Brabec C (2012)
Publication Language: English
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2012
Journal
Book Volume: 2
Pages Range: 1433-1438
Journal Issue: 12
Abstract
We demonstrate solution-processed tungsten trioxide (WO) incorporated as hole extraction layer (HEL) in polymer solar cells (PSCs) with active layers comprising either poly(3-hexylthiophene) (P3HT) or poly[(4,4′-bis(2-ethylhexyl)dithieno[3,2-b:2′,3′-d]silole)-2, 6-diyl-alt-(4,7-bis(2-thienyl)-2,1,3-benzothiadiazole)-5,50-diyl] (Si-PCPDTBT) mixed with a fullerene derivative. The WO layers are deposited from an alcohol-based, surfactant-free nanoparticle solution. A short, low-temperature (80 °C) annealing is sufficient to result in fully functional films without the need for an oxygen-plasma treatment. This allows the application of the WO buffer layer in normal as well as inverted architecture solar cells. Normal architecture devices based on WO HELs show comparable performance to the PEDOTPSS reference devices with slightly better fill factors and open circuit voltages. Very high shunt resistances (over 1 MO cm) and excellent diode rectification underline the charge selectivity of the solution-processed WO layers. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA.
Authors with CRIS profile
Tobias Stubhan
Institute Materials for Electronics and Energy Technology (i-MEET)
Ning Li
Institute Materials for Electronics and Energy Technology (i-MEET)
Gebhard Matt
Institute Materials for Electronics and Energy Technology (i-MEET)
Christoph Brabec
Institute Materials for Electronics and Energy Technology (i-MEET)
Additional Organisation(s)
Involved external institutions
Switzerland (CH)How to cite
APA:
Stubhan, T., Li, N., Luechinger, N.A., Halim, S.C., Matt, G., & Brabec, C. (2012). High fill factor polymer solar cells incorporating a low temperature solution processed WO3 hole extraction layer. Advanced Energy Materials, 2(12), 1433-1438. https://dx.doi.org/10.1002/aenm.201200330
MLA:
Stubhan, Tobias, et al. "High fill factor polymer solar cells incorporating a low temperature solution processed WO3 hole extraction layer." Advanced Energy Materials 2.12 (2012): 1433-1438.
BibTeX: Download