| Autor: |
Tangi, Malleswarara, De, Arpan, Ghatak, Jay, Shivaprasad, S. M. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 5/28/2016, Vol. 119 Issue 20, p205701-1-205701-6, 6p, 1 Color Photograph, 1 Diagram, 3 Graphs |
| Abstrakt: |
A kinetically controlled two-step growth process for the formation of an array of dislocation free high mobility InN nanorods (NRs) on GaN nanowall network (NWN) by Molecular Beam Epitaxy is demonstrated here. The epitaxial GaN NWN is formed on c-sapphire under nitrogen rich conditions, and then changing the source from Ga to In at appropriate substrate temperature yields the nucleation of a self assembled spontaneous m-plane side faceted-InN NR. By HRTEM, the NRs are shown to be dislocation-free and have a low band gap value of 0.65 eV. Hall measurements are carried out on a single InN NR along with J-V measurements that yield mobility values as high as ≈4453 cm2/V s and the carrier concentration of ≈1.1×1017 cm-3, which are unprecedented in the literature for comparable InN NR diameters. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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