Abstract
We found that the exciton-phonon coupling in the Zn1-xMg xO powders (0.01 x 0.07) is greatly influenced by the crystalline-size. Two well-resolved photoluminescence (PL) bands due to recombination of free exciton and its longitudinal optical (LO)-phonon replicas enable us to analyze the relative intensities among free excitons, one-LO-phonon replicas, and two-LO-phonon replicas. As crystalline size increases, a larger enhancement of the PL-intensity ratio of a free exciton to its LO-phonon replicas was found compared to that of two LO-phonon replica to one-LO-phonon replica.
Original language | English |
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Article number | 063526 |
Journal | Journal of Applied Physics |
Volume | 109 |
Issue number | 6 |
DOIs | |
State | Published - 15 Mar 2011 |