Fig. 4From: Photoluminescence and Boosting Electron–Phonon Coupling in CdS Nanowires with Variable Sn(IV) Dopant Concentrationa Far-field emission image of single Sn-doped CdS nanowire. Inset is the bright-field optical image of corresponding single nanowire. Scale bars are 20 μm. b Far-field PL spectra under increasing excitation power. Inset is the local scale-up of impurities emission bandsBack to article page