High-performance SERS substrate based on perovskite quantum dot–graphene/nano-Au composites for ultrasensitive detection of rhodamine 6G and p-nitrophenol

The designed PQD–G/Au nanocomposite shows high performance for ultrasensitive detection of R6G and PNP, attributed to the synergistic effect of the EM enhancement of Au nanostructures and CM enhancement of PQD–G heterostructures.