关于二维- (2D As-P) 化合物的电子和光学性质的第一原则研究
Jose Mario Galicia Hernandez1, Jonathan Guerrero-Sanchez1, Jairo Arbey Rodriguez-Martinez2
1Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada, Baja California 22860, Mexico.
ACS omega
|August 26, 2024
概括
本研究介绍了稳定的二维- (As-P) 系统. 这些新的2D As-P材料在技术应用中表现出有希望的电子和光学性能.
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
- 计算化学的计算化学
背景情况:
- 除了石墨烯之外的二维 (2D) 材料提供了独特的电子和光学特性.
- 探索新的二维二进制化合物对于推进材料科学至关重要.
研究的目的:
- 通过计算来设计和研究二维- (As-P) 系统的稳定性和性能.
- 评估这些新型二维材料在技术应用中的潜力.
主要方法:
- 六角形和正角形2D As-P结构的建模.
- 用于动态稳定性评估的Phonon光谱计算.
- 热力学和机械稳定性的凝聚能和弹性常数计算.
- 第一个原则密度函数理论 (DFT) 和GW近似电子带间隙.
- 贝特-萨尔佩特方程 (BSE) 对光学特性和激子结合能量的方法.
主要成果:
- 所有模拟的六边形和正方形2D As-P相都被发现是动态,热力学和机械稳定的.
- 电子带间隙使用GW近似准确计算.
- 确定了光学性能,包括介电函数和吸收系数.
- 计算了兴奋剂的结合能量,揭示了显著的兴奋剂效应.
结论:
- 调查的2D As-P系统显示出强大的稳定性.
- 计算出来的电子和光学性能表明了各种技术应用的巨大潜力.
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