Enhancement of random lasing through fluorescence resonance energy transfer and light scattering mediated by nanoparticles

摘要

A simple approach for the enhancement of random lasing based on fluorescence resonance energyntransfer and light scattering mediated by nanoparticles is reported. To illustrate our workingnprinciple, ZnO nanorods decorated with TiO2 nanoparticles were chosen as an example. It is shownnthat the random laser action of ZnO nanorods can be significantly improved by the assistance ofnTiO2 nanoparticles. Moreover, due to the inherent nature of higher refractive index of TiO2 thannZnO, the TiO2 nanoparticles can serve efficiently as better nanoscatterers, which can promote thenformation of closed-loop paths. Our strategy provided here is very useful for the future developmentnof high efficiency optoelectronic devices. © 2010 American Institute of Physics.nu0004doi:10.1063/1.3515913