| 초록 |
ZnMgO nanorods with different morphology have been synthesized by a catalyst-free thermal evaporation method using Zn and Mg metals as the raw materials. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), and room-temperature photoluminescence (PL) measurements were used to determine the structure and optical properties of the obtained products. The obtained nanowires have diameters in a range of 30 nm−80 nm, crystallized well as hexagonal phase, with preferred orientation along the c-axis for the nanorod sample. Room-temperature PL at wavelengths of 384.4 and 495.8 nm has been observed for the ZnMgO nanorod sample. Annealing of the nanorod sample in an oxygen atmosphere enhanced the near-band edge emission significantly and a clear blue shift of the emission peak. |
