Park, Young S and Holmes, Mark J and Shon, Y and Yoon, Im Taek and Im, Hyunsik and Taylor, Robert A (2011) GaN nanorods grown on Si (111) substrates and exciton localization. Nanoscale Research Letters, 6 (1). pp. 1-5.
Official URL: http://www.nanoscalereslett.com/content/6/1/81
We have investigated exciton localization in binary GaN nanorods using micro- and time-resolved photoluminescence measurements. The temperature dependence of the photoluminescence has been measured, and several phonon replicas have been observed at the lower energy side of the exciton bound to basal stacking faults (I1). By analyzing the Huang-Rhys parameters as a function of temperature, deduced from the phonon replica intensities, we have found that the excitons are strongly localized in the lower energy tails. The lifetimes of the I1 and I2 transitions were measured to be < 100 ps due to enhanced surface recombination.
|Subjects:||Physical Science > Nanophysics|
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
|Divisions:||Faculty of Engineering, Science and Mathematics > School of Physics|
Faculty of Engineering, Science and Mathematics > School of Chemistry
|Deposited On:||18 Jul 2011 08:51|
|Last Modified:||18 Jul 2011 08:51|
Repository Staff Only: item control page