准的方法来评估在Janus CrSeBr单层的火电性能
Ayushi Jain1, Dipankar Mandal1, Chandan Bera1
1Institute of Nano Science and Technology, Sector-81, Knowledge City, Sahibzada Ajit Singh Nagar, Mohali, Punjab 140306, India.
概括
简氏CrSeBr单层呈现出显著高的火电系数,大约是MoSSe的五倍. 这一发现凸显了其对先进电子应用的潜力.
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:
- 二维 (2D) 材料因其独特的介电性质而受到关注.
- 这些材料有望用于可穿戴电子产品,传感器和探测器的应用.
研究的目的:
- 为了研究Janus CrSeBr单层的火电特性.
- 使用理论方法计算火电系数和功率数字 (FOM).
主要方法:
- 进行了理论计算.
- 准波近似法 (QHA) 用于确定初级 (p1) 和二级 (p2) 烟电系数.
- 计算了各种温度的自发偏振.
主要成果:
- 贾努斯的CrSeBr单层在300K时显示了1.21μC m-2 K-1的火电系数.
- 这个值大约是MoSSe单层的5倍.
- 观察到一个高的优点 (FOM),Fv = 0.035 m2 C-1 和 Fi = 1.97 pm V-1.1.
结论:
- 与MoSSe.Br相比,Janus CrSeBr单层具有更高的火电系数和FOM.
- 它的高FOM电压响应性表明微电子和传感器的商业应用有很大的潜力.
相关概念视频
01:16IR Spectroscopy: Hooke's Law Approximation of Molecular Vibration
1.4K
A covalently bonded heteronuclear diatomic molecule can be modeled as two vibrating masses connected by a spring. The vibrational frequency of the bond can be expressed using an equation derived from Hooke's law, which describes how the force applied to stretch or compress a spring is proportional to the displacement of the spring. In this case, the atoms behave like masses, and the bond acts like a spring.
According to Hooke's law, the vibrational frequency is directly proportional to...
According to Hooke's law, the vibrational frequency is directly proportional to...
1.4K
02:26Photoelectric Effect
29.8K
When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...
29.8K