Fabrication of a Combustion-Reacted High-Performance ZnO Electron Transport Layer with Silver Nanowire Electrodes for Organic Solar Cells

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Herein, a new methodology for solution processed ZnO fabrication on Ag nanowire network electrode via combustion reaction is reported, where the amount of heat the reaction temperature to avoid damaging the underlying Ag nanowires. The degree of participation of acetylacetones, which are volatile fuels in the combustion reaction, was found to vary with the reaction temperature, as revealed by thermogravimetric and compositional analyses. An optimized processing temperature of 180 degrees C was chosen to successfully fabricate a combustion-reacted ZnO and Ag nanowire hybrid electrode with a sheet resistance of 30 Omega/sq and transmittance of 87%. A combustion-reacted ZnO on Ag structure was demonstrated as an efficient transparent electrode and electron transport layer for the PTB7-Th-based polymer solar cells. The superior electrical conductivity of combustion-reacted ZnO, compared to that of conventional sol-gel ZnO, increased the external quantum efficiency over the entire absorption range, whereas a unique light scattering effect due to the presence of nanopores in the combustion-derived ZnO further enhanced the external quantum efficiency in the 450-550 nm wavelength range. A power conversion efficiency of 8.48% was demonstrated for the PTB7-Th-based polymer solar cell with the use of a combustion-reacted ZnO/Ag NW hybrid transparent electrode.
Publisher
AMER CHEMICAL SOC
Issue Date
2018-02
Language
English
Article Type
Article
Keywords

LIGHT-EMITTING DIODE; COMPOSITE ELECTRODES; METAL-OXIDE; SENSING CHARACTERISTICS; TRANSPARENT; FILMS; TEMPERATURE; SENSOR

Citation

ACS APPLIED MATERIALS & INTERFACES, v.10, no.8, pp.7214 - 7222

ISSN
1944-8244
DOI
10.1021/acsami.7b17148
URI
http://hdl.handle.net/10203/241105
Appears in Collection
EEW-Journal Papers(저널논문)
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