Please use this identifier to cite or link to this item:
|Title:||Phonon-assisted stimulated emission in Mn-doped ZnO nanowires|
|Source:||Liu, R., Pan, A., Fan, H., Wang, F., Shen, Z., Yang, G., Xie, S., Zou, B. (2007-04-04). Phonon-assisted stimulated emission in Mn-doped ZnO nanowires. Journal of Physics Condensed Matter 19 (13) : -. ScholarBank@NUS Repository. https://doi.org/10.1088/0953-8984/19/13/136206|
|Abstract:||Well-crystallized Mn-doped ZnO nanowires were synthesized by a high-temperature chemical reduction method. The microscopic and macroscopic photoluminescence (PL) spectra of these Mn-doped ZnO nanowires were studied. Both the free-exciton emission band and the second-order longitude optical (2LO) phonon-assisted emission band were observed in the microscopic PL spectra. Furthermore, from the power dependent macroscopic PL spectra, the stimulated emission was observed around the 2LO phonon-assisted emission band with an increase in pump fluence, which relates to the strong exciton-phonon couplings along the c-axis in these Mn-doped ZnO nanowires. The nonresonant micro-Raman scattering spectrum demonstrates the strong 2LO phonon mode, which is enhanced by Mn doping. Resonant micro-Raman scattering shows multi-LO modes, due to the strong exciton-phonon coupling via a deformation potential induced by the Mn ions in these Mn-doped ZnO nanowires. Moreover, the low-temperature UV PL band is discussed to demonstrate the activity of phonons in the Mn-doped ZnO nanowires. © IOP Publishing Ltd.|
|Source Title:||Journal of Physics Condensed Matter|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Apr 2, 2018
WEB OF SCIENCETM
checked on Feb 19, 2018
checked on Apr 20, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.