کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1526244 | 1511848 | 2009 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis of polycrystalline nanotubular Bi2Te3 Synthesis of polycrystalline nanotubular Bi2Te3](/preview/png/1526244.png)
Polycrystalline nanotubular Bi2Te3 could be prepared via a high-temperature solution process using nanoscale tellurium, decomposed from trioctylphosphine oxide (TOPO) extracted tellurium species (Te-TOPO), as sacrificial template. The formation of such tubular structure is believed to be the result of outward diffusion of Te during the alloying process. The electrical properties (Seebeck coefficient and electrical conductivity) of the polycrystalline nanotubular Bi2Te3 have been studied and the experimental results show that the electrical conductivity is approximately three orders of magnitude smaller than bulk bismuth telluride materials mainly due to the much larger resistance brought by the insufficient contact between the nanotubular structures.
Journal: Materials Chemistry and Physics - Volume 113, Issues 2–3, 15 February 2009, Pages 664–669