Ultrasonic spray coating of gold nanoparticles: A comprehensive study on the surface coverage and position of Au-NPs in the hole injection layer of OLEDs for an optimized luminous efficacy

Rachith S. Kumar; Maarten Eerdekens; Naveen Reddy; Thierry Verbiest; Wim Deferme

doi:10.1117/12.2593973

1 August 2021 Ultrasonic spray coating of gold nanoparticles: A comprehensive study on the surface coverage and position of Au-NPs in the hole injection layer of OLEDs for an optimized luminous efficacy

Rachith S. Kumar, Maarten Eerdekens, Naveen Reddy, Thierry Verbiest, Wim Deferme

Author Affiliations +

Proceedings Volume 11808, Organic and Hybrid Light Emitting Materials and Devices XXV; 1180808 (2021) https://doi.org/10.1117/12.2593973
Event: SPIE Organic Photonics + Electronics, 2021, San Diego, California, United States

Abstract

OLEDs consisting of Au-NPs sandwiched between anode and hole injection layer, and close to an active layer inside PEDOT:PSS is fabricated by Ultrasonic Spray Coating (USSC). Optimized surface coverage of Au-NPs on ITO facilitates efficient charge injection and an optimized position of the Au-NPs away from the active layer accelerates the radiative recombination. Obtained results indicate that USSC could effortlessly tune the surface coverage and the vertical position of the Au-NPs to enhance the OLED’s efficacy. This paves the way for the fabrication of large area, high efficient OLEDs with USSC.

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Rachith S. Kumar, Maarten Eerdekens, Naveen Reddy, Thierry Verbiest, and Wim Deferme "Ultrasonic spray coating of gold nanoparticles: A comprehensive study on the surface coverage and position of Au-NPs in the hole injection layer of OLEDs for an optimized luminous efficacy", Proc. SPIE 11808, Organic and Hybrid Light Emitting Materials and Devices XXV, 1180808 (1 August 2021); https://doi.org/10.1117/12.2593973

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