Abstract
We report the influence of Ag nanoparticle arrays on the emission properties of organic light emitting diodes (OLED). First, we studied the features of Ag arrays related to the periodicity. The obtained results emphasize the existence of two coupling regimes dominated by near or far field effects, respectively. Thereafter, we studied the influence of these gratings on the performances of OLED devices. Our results reveal the benefit of the plasmonic structures which allow a precise tuning of the OLED properties.
Highlights
In recent years, several works have been reported on the plasmonic effect of nanoparticle arrays [1]
We report the investigation of the influence of Ag nanoparticle arrays on the emission of organic light emitting diodes (OLED) devices
Depending on the grating period, the obtained results emphasize the existence of two coupling regimes, localized surface plasmon resonance (LSPR) regime [3] and the surface lattice resonance (SLR) regime [4]
Summary
Several works have been reported on the plasmonic effect of nanoparticle arrays [1]. Numerous studies concerning the interaction of metallic nanoparticles nearby active molecules have been, reported [2]. A deep understanding of the influence of metallic nanoparticle gratings on the optical responses of organic emitters is still needed, in order to efficiently control their emission features. Almost the studies, focus on the optical excitation of emitter-nanoparticle system. Thereby, understanding this phenomenon under electrical excitation might reveal new coupling features and bring additional insight to the effects induced by plasmonic structures. The careful study of these processes are crucial to develop efficient and new organic light emitting diodes (OLED), which may pave the way to new organic laser diode
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