Abstract
Degenerately Sn‐doped In2O3 (ITO) nanowires were synthesized via an Au‐catalyzed vapor–liquid–solid (VLS) method at 750 °C. The Au seed layer provided sites with a high surface energy for the selected‐area growth of ITO nanowires. Morphology and crystal structures confirmed by field emission scanning electron microscope (FESEM), high‐resolution transmission electron microscope (HRTEM), and X‐ray diffraction (XRD). X‐ray photoelectron spectroscopy (XPS) was employed to obtain the chemical compositions of the ITO nanowires as well as the ratio of Sn/In and oxygen concentrations. Under the photo‐excitation the ITO nanowires emit ultraviolet light, which can be ascribed to transitions related to donor levels. Moreover, photoluminescence (PL) spectrophotometer and UV–VIS spectrum analysis revealed a blue shift peaks in the degenerately ITO nanowires. This phenomenon can be explained by Burstein–Moss effect.
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