Modified Chemical Vapor Deposition Synthesis of Ultralong V2O5 Nanobelt and Its Electronic Properties

The fascinating properties and wide applications of the V2O5 nanostructures have attracted significant attention over the past decades. In this paper, ultralong (centimeter-scale) single-crystal V2O5 nanobelts are successfully fabricated by modified chemical vapor deposition. The wide of the V2O5 nanobelts are 20-500 nnn. The aspect ratio exceeds 10(5). The structure and crystal orientation of the nanobelts are investigated. X-ray diffractometer (XRD) patterns and Raman spectrum show the substrate temperature affecting the size and morphology of the V2O5 nanobelts. And the growth mechanism and electronic properties of the ultralong V2O5 nanobelt are studied in detail. The activation energy 0.12 eV is calculated. The fastest growth orientation along the [010] direction has been observed. Our work demonstrates that the single-crystal V2O5 nanobelt has potential applications in field-emitters, lithium-ion batteries, photodetectors, interconnect, and optoelectronic devices, etc.