Plasmonic enhancement in optoelectronics

Metal nanostructures in sub nanometer scale exhibited the plasmonic absorption behavior and is fruitful for opto-electronic applications. Significantly, noble metals demonstrate this absorption within the visible spectrum. Due to its higher momentum, coupling of plasmons with photons can yield enhancement in optoelectronic devices especially in OLEDs and organic solar cells. Thus, the higher momentum of plasmons reduces the exciton lifetime and thereby the exciton generation or the dissociation process reinforced in such systems. This process is termed as localized plasmonic coupling or enhancement. Meanwhile, the higher scattering cross section of noble metal nanoparticles are capable of generating far-field plasmonic enhancements. In this respect, we examine these mechanisms in optoelectronic devices towards enhancing the quantum efficiencies.