We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Theoretical and Experimental Study of Time- and Temperature-Dependent Photoluminescence in ZnO.
- Authors
Shishehchi, Sara; Garrett, Gregory; Rudin, Sergey; Wraback, Michael; Bellotti, Enrico
- Abstract
In this work, we investigate the dynamics of photo-excited carriers in ZnO. Specifically, we study the luminescence spectrum and the effect of temperature on the luminescence rise time. For comparison, experimental time- resolved photo-luminescence studies on ZnO samples are performed. In the theoretical model, interaction with a laser pulse is treated coherently and a generalized Monte Carlo simulation is used to account for scattering processes. The scattering mechanisms included are carrier interactions with polar optical phonons and acoustic phonons, and carrier-carrier Coulomb interactions. We observed a good agreement between the experimental and simulation results for the photo-luminescence spectrum. Furthermore, as the temperature increases, the luminescence rise time decreases, mostly due to the weaker effect of polar optical scattering at lower temperature.
- Subjects
LIGHT sources; PHOTOLUMINESCENCE; LUMINESCENCE; MONTE Carlo method; ZINC oxide
- Publication
Journal of Electronic Materials, 2014, Vol 43, Issue 8, p3033
- ISSN
0361-5235
- Publication type
Article
- DOI
10.1007/s11664-014-3188-0