High-Performance Organic Optoelectronic Devices Based on Dimension-Fusion-Type Plasmonic Structures

Abstract

Organic optoelectronic devices have attracted great attention because of many advantages including flexibility, low fabrication cost and light weight. The use of surface plasmon resonance (SPR) effects of metal nanostructures is one of the most promising approaches for enhancing the performance of organic optoelectronic devices. The SPR effects of metal nanoparticles or metal nanostructures including scattering, localized surface plasmon (LSP) and surface plasmon polariton (SPP) are effective ways to store the incident light energy and enhance the photogeneration of excitons. In this work, novel plasmonic dual structures having both grating nanoscale patterns and nano scale-hole patterns have been developed. In addition, these dual patterns have been applied in various organic optoelectronic devices such as organic photovoltaics (OPVs), organic photodiodes (OPDs) and organic phototransistors (OPTs). Incorporating dual patterns as a back reflector electrode in OPV and OPD system and a gate electrode in OPT system has led to remarkable improvement in device performance owing to the increased light absorption and scattering via enhanced electric field distributions. The developed methodology which utilizes plasmonic dual structures is highly promising for enhancing the performance of organic optoelectronic devices and may pave a way for commercializing organic optoelectronic devices.