Template-Free Bipotentiostatic Deposition of Thermoelectric BixTey Nano Arrays

• 作者: Chuan Zhao Feng Wang Xin Bo
• 来源期刊: 材料科学与化学工程(英文)
• 学科: 化学
• 关键词: THERMOELECTRIC Materials BISMUTH TELLURIDE Nano ARRAYS TEMPLATE-FREE ELECTRODEPOSITION
• 年，卷（期）: 2017,（1）
• 页码范围: 1-7
• 页数: 7页
• 分类号: O6

摘要

Monodispersed Bi-Tenano arrays are achieved via template-free bipotentiostatic deposition. The diameter and length of individual nanorod is ~80 nm and ~250 nm respectively. The electrodeposition process is demonstrated to follow a two-step mechanism: an instantaneous reductive potential is applied to form dispersive nuclei, then a reverse oxidative potential strips partial Bi atoms to prevent further cross-growth. Repeatedly, the nano arrays film is obtained eventually. The thermoelectric properties of the obtained Bi-Tenano arrays such as electrical resistance, carrier density, Seebeck coefficient and power factor are measured to be 2.438 × 10-4?Ω·m, 4.251 × 1020 cm-3, -25.892 μV·K-1, 2.750 × 10-6 W·m-1·K2, respectively.