03 خرداد 1403
رعد چگل

رعد چگل

مرتبه علمی: دانشیار
نشانی: دانشگاه ملایر
تحصیلات: دکترای تخصصی / نانو اپتیک
تلفن: 09166615727
دانشکده: دانشکده علوم پایه

مشخصات پژوهش

عنوان
Thermal Conductivity and Heat Capacity of Silicene Nanotube Compared to Silicene Nanoribbon
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Silicene Nanotube . Tight binding model . Thermal properties
سال
2022
مجله Silicon
پژوهشگران رعد چگل ، نادر قبادی

چکیده

We use the third nearest tight binding model to investigate the thermo-electric properties of (N,0) zigzag Silicene nanotubes (ZN-SiNTs) for β [n = 3s0 + 1] and γ [n = 3s0 + 1] types with integer number s0. We validated our tight binding model by density functional theory (DFT) data. The Green function approach is employed to investigate the thermal properties of the ZN-SiNTs. Our calculations indicate that ZN-SiNTs have a direct band gap, which decreases with diameter. For the constant diameter, the thermal properties increase with the temperature, because the thermal energy of charge carriers increases with temperature. Larger diameter SiNTs have higher thermal properties due to the smaller band gap. The γ-type SiNTs have higher thermal intensities as compared to the β-type, because based on smaller band gap, their charge carriers need more thermal energy to excitation to conduction bands. By comparing the thermal properties of (N,0) armchair Silicene nanoribbons (AN-SiNRs) and ZN-SiNTs, we found that the thermal properties ZN-SiNT is smaller than that of the AN-SiNR with corresponding N.