The Purcell factors with different emission wavelengths and different LSP-exciton coupling distances. (a) and (c) stand for Ag40, and (b) and (d) stand for Ag80. Both the distance between the Ag nanostructures and the excitons in SiNx and the emission wavelength of the SiNx matrix will influence the values of the Purcell factor.
Wang et al. Nanoscale Research Letters 2012 7:669 doi:10.1186/1556-276X-7-669