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. (C) 2015 Elsevier B.V. All rights reserved.