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

Advanced Energy Materials Wiley

Book Volume: 2

Pages Range: 1433-1438

Journal Issue: 12

DOI: 10.1002/aenm.201200330

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) (i-MEET) Ning Li Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET) Gebhard Matt Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET) Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET)

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials (EAM)

Involved external institutions

Nanograde Ltd. CH 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://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.

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