Selective Nucleation and Band-Gap Widening of LiNbO3 Nanocrystals on an α-Al2O3 Substrate |
| |
Authors: | Geun-Hyoung Lee |
| |
Affiliation: | Department of Information Materials Engineering, Dong-eui University, Busan 614-714, South Korea |
| |
Abstract: | Selective nucleation of LiNbO3 nanocrystals on the steps was observed during the initial stage of LiNbO3 film growth in an α-Al2O3 (0001) substrate with a multiatomic step structure. In addition, stress stored in the nanocrystals as a result of the different thermal expansion coefficients of the film and the substrate caused band-gap widening. As the size of the nanocrystals decreased, the band gap shifted to a higher energy. |
| |
Keywords: | nucleation lithium niobate substrates |
|
|