探索用于光电子和螺旋电子应用的甲基矿启发材料 (Sn₂SbX₂I₃; X = S或Se)

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Manish Kumar¹, Sajjan Sheoran¹, Saswata Bhattacharya¹

¹Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016, India.

The journal of physical chemistry letters

|November 5, 2023

概括

新的石灰化矿矿材料显示出对光电子技术的前景. 它们的电子结构显示出显著的带分裂和可调节的激发性质,使它们适合用于自旋电子和先进的光学设备.

科学领域:

材料科学材料科学材料科学
凝聚物质物理学凝聚物质物理学
固态化学固态化学

背景情况:

启发矿矿的材料因其在光电子领域的潜力而得到认可,因为其具有小带间隙,缺陷耐受性和稳定性等特性.
对它们的电子结构和兴奋状态特征的全面了解仍然不完整.

研究的目的:

为了研究Sn2SbX2I3 (X = S或Se) 材料的电子结构和刺激性质.
用先进的计算方法分析带分裂和激子结合能量.

主要方法:

密度函数理论 (DFT) 的计算.
有效的k·p模型分析.
多体扰动理论 (GW和贝特-萨尔佩特方程 (BSE) 框架).

主要成果:

在Cmc21阶段,由于Rashba和Dresselhaus效应在频段边缘附近,显示了显著的带分裂.
兴奋剂的结合能量高于化 PeroVskites,但低于化 PeroVskites.
波拉龙促进的电荷载体流动性与合物矿石可比,优于矿石矿石.

结论:

Sn2SbX2I3 材料具有独特的电子和刺激性质.
观察到的带分裂和载体移动性表明了旋转电子和光电子应用的潜力.

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