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Theoretical prediction of intrinsic carrier mobility of monolayer C7N6: First-principles study
Physics Letters A ( IF 2.6 ) Pub Date : 2021-04-02 , DOI: 10.1016/j.physleta.2021.127340
Yajing Zhang , Shuo Cao , Yanzhou Wang , Xiaodong Jian , Libin Shi , Ping Qian

One porous carbon-nitride monolayer of C7N6, a two-dimensional graphene-derivative material, has been synthesized recently. Herein we performed polarization Wannier interpolation (PWI) calculations to study the inherent mobility of monolayer C7N6 at various temperatures. The electron (hole) mobilities, of 146.77 (79.66) and 140.55 (76.52) cm2 V−1 s−1 along x and y directions, were calculated at 300 K, respectively. In order to analyze contributing factors of the mobility, we also treated the carrier mobility via deformation potential theory model (DPTM) of both longitudinal acoustic (LA) phonon and optical phonon. Our findings demonstrated that the optical phonon is the dominant scattering process with the electron (hole) mobility of 1.38 × 103 (1.35 × 102) cm2 V−1 s−1 and 1.36 × 103 (1.30 × 102) cm2 V−1 s−1 in x and y directions, respectively, via optical phonon of DPTM.



中文翻译:

单层C 7 N 6固有载流子迁移率的理论预测:第一性原理研究

最近,合成了二维的石墨烯衍生物材料C 7 N 6的多孔氮化碳单层。本文中,我们进行了极化Wannier内插(PWI)计算,以研究单层C 7 N 6在不同温度下的固有迁移率。沿xy的电子(空穴)迁移率分别为146.77(79.66)和140.55(76.52)cm 2  V -1  s -1方向分别以300 K计算。为了分析迁移率的影响因素,我们还通过纵向声(​​LA)声子和光学声子的变形势理论模型(DPTM)来处理载流子迁移率。我们的发现表明,光学声子是主要的散射过程,其电子(空穴)迁移率分别为1.38×10 3(1.35×10 2)cm 2  V -1  s -1和1.36×10 3(1.30×10 2)cm经由DPTM的光子在xy方向分别为2  V -1  s -1

更新日期:2021-04-06
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