Abstract
Multiwalled Bi2Te3 nanotubes were synthesized via a trouble-free solvothermal route at 100°C. X-ray diffraction pattern confirms the rhombohedral phase of as synthesized Bi2Te3 sample. The electrical conductivity (σ) and dielectric properties of as synthesized Bi2Te3 nanotubes were investigated. The metallic behavior (dσ/dT<0) of Bi2Te3 nanotubes was observed and Debye theory was applied to demonstrate the dielectric relaxation behavior of Bi2Te3 nanotubes. Bi2Te3 nanotubes with high dielectric constant (ε′∼30–3178) and low dielectric loss (tanδ∼0.04–4.04) confirms that capacitors of capacity (C∼41–2296pF) may be fabricated which will be useful for storage of renewable energy in various practical devices.
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