Kumar, S.; Tessarek, C.; Hähnel, A.; Christiansen, S.; Singh, R.: Study of Growth and Characterization of Fe-Catalyzed β-Ga2O3 Nanowires. In: G. Koblmueller [Ed.] : 2014 MRS Fall Meeting - Symposium LL – Semiconductor Nanowires—Growth, Physics, Devices and Applications Warrendale, Pa.: MRS, 2015 (Materials Research Society Proceedings ; 1751), p. ll13-32/482
10.1557/opl.2015.482
Open Access Version
(available 01.01.3000)Abstract:
In the present study, Fe as a catalyst was used to grow single crystalline monoclinic gallium oxide (ß-Ga203) nanowires using chemical-vapor-deposition method. The morphology, structure and luminescence properties of the as-grown ß-Ga2Ü3 nanowires were investigated using various characterization techniques. The diameter of the as-grown nanowires was in the range of 50 to 100 nm, and the lengths up to tens of micrometers. The structural investigation of the nanowires was carried out using X-ray diffraction that showed monoclinic phase of Ga203. Further, the transmission electron microscope (TEM) investigations along with selected area diffraction pattern revealing single crystalline nature of the nanowires. The as-grown ß-Ga203 nanowires had preferred orientation along [1-1-1] direction. The high resolution TEM image showed regular arrangement of atoms and the lattice spacing between (1-1-1) planes was around 0.266 nm. The luminescence properties ofthe as-grown nanowires were measured using cathodoluminescence (CL) spectroscopy. The CL measurements of ß-Ga203 nanowires revealed a strong broad UV-blue emission band and a weak red emission band.