کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1597092 | 1002914 | 2006 | 5 صفحه PDF | دانلود رایگان |
Single-crystalline SnO2 nanowires with sizes of 4–14 nm in diameter and 100–500 nm in length were produced in a molten salt approach by using hydrothermal synthesized precursor. Structural characters of the nanowires were examined by X-ray diffraction and high-resolution electron transmission microscopy. Raman, photoluminescence and X-ray photoelectron spectra of the samples were examined under heat treatments. Three new Raman modes at 691, 514 and 358 cm−1 were recorded and assigned. The former two are attributed to activation of original Raman-forbidden A2uLO mode and the third is attributed to defects in small-sized nanowires. A strong photoluminescence is observed at about 600 nm, the temperature effects is examined and the origin of the PL process is discussed via X-ray photoelectron spectra.
Journal: Solid State Communications - Volume 138, Issue 5, May 2006, Pages 242–246