Au nanoparticle-decorated porous gallium nitride as an ultrasensitive substrate for surface enhanced Raman spectroscopy

Abstract

Ultrasensitive surface enhanced Raman scattering substrates have been fabricated by electrodepositing Au nanoparticles onto porous gallium nitride. A detection limit of ∼10−16 M rhodamine 6G, approximating single-molecule detection, can be achieved.