黑磷/黑砷异质结纳米器件热电性质应力调控研究  

Thermoelectric properties of black phosphorus/black arsenic heterojunction under different stress regulations

作　　者：戎杙 邱乙峰 张蓓[1] RONG Yi;QIU Yi-Feng;ZHANG Bei(School of Physical Science and Technology,Xinjiang University,Urumqi 830046,China)

机构地区：[1]新疆大学物理科学与技术学院,乌鲁木齐830046

出　　处：《原子与分子物理学报》2025年第1期69-74,共6页Journal of Atomic and Molecular Physics

基　　金：自治区科技厅自然科学基金(2021D01C033);国家自然科学基金地区基金(12164046)。

摘　　要：探索新型高性能低维热电纳米材料已成为国家重大发展策略.论文采用密度泛函理论结合非平衡态格林函数方法研究了由黑磷、黑砷纳米带构建异质结构在2%、4%、6%和8%四种拉伸应变作用下热电性能调控机理.研究结果表明,6%拉伸应变较其他情形,能够更有效抑制声子输运行为;与此同时,拉伸应变对于器件的电子输运的调控效果并不明显.在费米能附近,黑磷/黑砷异质结纳米器件在6%拉伸应变调控下热电优值达到最大值2.31.Exploring novel high-performance low-dimensional thermoelectric nanomaterials has become a major national development strategy.Non-equilibrium Green's function(NEGF)was used to study the difference in thermoelectric properties of black phosphorus/black arsenic heterojunction under stress of 2%、4%、6% and 8%.The results show that phonon transport is effectively suppressed under tensile strain of 6%,but the effect on the electronic transport of the device is not obvious.Thermoelectric values of heterojunction nanodevices reaches the maximum value of 2.31 under the control of 6% tensile strain near Fermi level.

关 键 词：黑磷 黑砷 异质结 应力 热电性质 

分 类 号：O469[理学—凝聚态物理]