Effect of temperature changes on thermoelectric properties of the two sided-closed single-walled Boron Nitride nanotubes (۶, ۳)
Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
View: 170
This Paper With 7 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JITF-5-1_001
تاریخ نمایه سازی: 9 مرداد 1401
Abstract:
In this study, thermoelectric properties of the two sided-closed single-walled boron nitride nanotubes (TSC-SWBNNTs) are investigated. For this purpose, a nanotube with the chirality of (۶, ۳) is selected with no impurities. The energy is considered in the range of -۵.۵ to ۵.۵ electron volts and the investigations are performed at the temperatures ۳۰۰, ۵۰۰, ۷۰۰ and ۹۰۰K. The results show that increasing temperature results in significant reduction in the length of the bandgap. Besides, the peaks of the conduction diagram become smaller and their number decreases, indicating the return of more electrons and holes around the LUMO and HOMO bands, respectively, which leads to reduction of the bandgap and increase in the conduction. Moreover, the seebeck coefficient (thermal power) has increased to about ۳۷۰ μV/K by increasing temperature to ۹۰۰K. As the temperature increases, the coefficient of merit (ZT) increases to about ۰.۹۵, and it is expected to experience more increase with further increase in temperature. Thermal conductivity has also increased slightly with increasing temperature. However, the values of thermal conductivity are at the nanoscale. Therefore, in general, it can be concluded that the (TSC-SWBNNT) (۶, ۳) can be selected as a suitable thermoelectric material.
Keywords:
nanotube , seebeck coefficient (thermal power) , coefficient of merit , Thermal conductivity , Electrical conductivity
Authors
علی محمد یدالهی
Department of Physics, Takestan Branch, Islamic Azad University, Takestan, Iran
پیمان عظیمی انارکی
Department of Physics, Takestan Branch, Islamic Azad University, Takestan, Iran
مجتبی یعقوبی
Department of Physics, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
محمد رضا نیازیان
Department of Physics, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :