单层和少数层二烯的光电子和光子性能层工程使用第一原则计算
Habiba Mamori1, Ahmed Al Shami1, Loubaba Attou1,2
1Laboratory of Condensed Matter and Sciences Interdisciplinary (LaMCScI), Faculty of Science, Mohammed V University in Rabat BP 1014 RP Rabat Morocco habiba.mamori@gmail.com omar.mounkachi@fsr.um5.ac.ma.
RSC advances
|January 4, 2024
概括
这项研究揭示了剥皮过程如何影响烯纳米材料中的光电子特性. 与2D形式相比,散装二烯具有优越的电流电压特性,原因是与2D形式相比,它具有较低的肖特基屏障.
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
- 纳米技术纳米技术
背景情况:
- 开发用于光电子和光子设备的纳米材料是一个关键的挑战.
- 素是这些应用的有希望的材料,但其性能对制备方法敏感.
研究的目的:
- 调查剥皮过程对二烯光电子和光子特性的影响.
- 分析不同形式的二烯的结构稳定性和电子带结构.
- 了解材料厚度,电子孔相互作用和设备性能之间的关系.
主要方法:
- 第一个原则密度函数理论 (DFT) 计算.
- 非平衡格林函数 (NEGF) 方法.
- 对结构稳定性的Phonon模式分析.
- 吸收能量和电子放松寿命的计算.
主要成果:
- 酸层保持半导体行为与直接带间隙,类似于散装,即使有10层.
- 脱皮显著影响光电子特性,包括电子孔相互作用和吸收能量.
- 大量二烯表现出比单层和少层二烯更高的电流电压灵敏度和更低的肖特基屏障.
结论:
- 脱皮过程极大地影响了二烯的光电子和光子特性.
- 在不同的烯形式中证实了结构稳定性.
- 散装烯由于其有利的接口特性,为设备应用提供了优势.
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