Fig. 2
From: Surface-Related Exciton and Lasing in CdS Nanostructures

a Temperature-dependent PL spectra of CdS NBs in the range from 20 K to 295 K, the inset is plots of FXA, A0X, and SX peaks as a function of temperature. b Temperature-dependent PL spectra of CdS NWs in the range from 20 K to 295 K, the inset is SX peak redshift with the temperature, and the solid red curve of the SX is corresponding to the fit result based on Varshni equation