Competitive mechanism of electron transition in Mn-doped ZnS nanoribbons

In this work, ZnS-based one-dimensional nanoribbons were synthesized by a simple thermal evaporation method. The highly crystalline fringes exhibit the wurtzite structure, growing mainly along the [001] or [100] direction. The optical absorption spectra showed that the optical absorption band edge of the pure ZnS nanoribbons exhibit an obvious blue shift compared to that of the Mn-doped ZnS. Strong emission band centered at 343 nm has been found from the PL spectrum of the pure ZnS nanoribbons, while a weak defect-related emission centered at 580 nm also was discovered with the dopant of Mn element. Combined with all the measurements, the growth mechanism and the electron transition process were discussed.