Improve the surface of silver nanowire transparent electrode using a double-layer structure for the quantum-dot light-emitting diodes

We developed a double-layer structured transparent electrode for use in flexible quantum-dot light-emitting diodes (QLEDs). Silver nanowires (AgNWs) and highly conductive poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) were coated on a transparent substrate to obtain a highly co...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2018-03, Vol.57 (3), p.32101
Main Authors: Cho, Seok Hyeon, Heo, Su Been, Kang, Seong Jun
Format: Article
Language:English
Subjects:
Conductivity
Electrodes
Flat panel displays
Mechanical properties
Nanowires
Organic light emitting diodes
Polystyrene resins
Prototypes
Quantum dots
Reliability aspects
Substrates
Surface roughness
Tin oxides
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Summary:We developed a double-layer structured transparent electrode for use in flexible quantum-dot light-emitting diodes (QLEDs). Silver nanowires (AgNWs) and highly conductive poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) were coated on a transparent substrate to obtain a highly conductive and flexible transparent electrode. The highly conductive PEDOT:PSS improved the surface roughness of the AgNWs transparent electrode film as well as the surface coverage area of the film. The double-layer structured transparent electrode showed superior mechanical properties than conventional indium-tin oxide (ITO) and AgNWs transparent electrodes. QLEDs with the double-layer structured transparent electrode also showed good reliability under cyclic bending conditions. These results indicate that the double-layer structured AgNWs/PEDOT:PSS transparent electrode described here is a feasible alternative to ITO transparent electrodes for flexible QLEDs.
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.57.032101