ZnO/Al2O3 core-shell nanorod arrays: Growth, structural characterization, and luminescent property
Journal
INEC 2010 - 3rd International Nanoelectronics Conference
Pages
1457-1458
Date Issued
2010
Author(s)
Abstract
We reported the aqueous chemical method to fabricate the well-aligned ZnO/Al 2 O 3 nanocrystal (NC) core-shell nanorod arrays (NRAs). Structural characterization showed that the shell layers are composed of ¿-Al 2 O 3 nanocrystals. Photoluminescence measurements showed the enhancement of near-band-edge (NBE) emission of ZnO NRAs due to the presence of Al 2 O 3 NC shells. The Al 2 O 3 NC shell layer resulting in flatband effect near ZnO surface leads to a stronger overlap of the wavefunctions of electrons and holes in the ZnO core, further enhancing the NBE emission. This approach should be very useful in designing many other core-shell NRAs for creating varieties of high-efficiency optoelectronic devices.
Type
conference paper