相关实验视频

Updated: Apr 30, 2026

Electron Channeling Contrast Imaging for Rapid III-V Heteroepitaxial Characterization

Electron Channeling Contrast Imaging for Rapid III-V Heteroepitaxial Characterization

Published on: July 17, 2015

基于算法对GaAs (001) 进行GeSn的线性分级组合,通过分子光束Epitaxy

Calbi Gunder¹, Mohammad Zamani-Alavijeh², Emmanuel Wangila¹

¹Materials Science and Engineering, University of Arkansas, Fayetteville, AR 72701, USA.

Nanomaterials (Basel, Switzerland)

|June 13, 2024

概括

这项研究引入了一种新的对数算法,用于精确控制分子束表达过程中的-锡 (GeSn) 薄膜组成. 该算法可以在化基板上生长高质量的,线性分级的GeSn薄膜,其锡含量高达16%.

科学领域:

材料科学材料科学材料科学
半导体的增长半导体的增长
纳米技术纳米技术

背景情况:

预计未来高成分 (GeSn) 薄膜的发展将由算法方法驱动.
对成分的精确控制对于定制GeSn合金的光电子特性至关重要.

研究的目的:

为了证明基于对数算法的高质量GeSn电影生长算法的有效性.
通过使用分子束表 (MBE) 在甲 (GaAs) (001) 基板上达到高GeSn成分 (高达16%) .

主要方法:

使用组合定位和对数锡 (Sn) 电池温度控制.
用于薄膜沉积的分子束表 (MBE).
使用X射线衍射 (XRD),模拟,二次离子质谱 (SIMS) 和原子力显微镜 (AFM) 进行特征电影.

主要成果:

成功实现了直线分级的伪形态Ge_1-xSn_x组合,达到10%的Sn.
在部分结构放松后继续构成梯度至16%GeSn.
演示了算法驱动的,线性分级的GeSn片生长.

结论:

开发的对数算法为生长高组成的GeSn片提供了精确的控制.
这种方法代表了GeSn材料开发的重大进步.
为先进的半导体合金的算法控制增长铺平了道路.

关键词:

在 GeSn 中使用.基于算法的GeSn增长.基于对数的 GeSn 增长率.

更多相关视频

Fabrication of Schottky Diodes on Zn-polar BeMgZnO/ZnO Heterostructure Grown by Plasma-assisted Molecular Beam Epitaxy

Fabrication of Schottky Diodes on Zn-polar BeMgZnO/ZnO Heterostructure Grown by Plasma-assisted Molecular Beam Epitaxy

Published on: October 23, 2018

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon

Published on: July 17, 2020

相关概念视频

Carrier Generation and Recombination

Carrier Generation and Recombination

Carrier generation is the process by which electron-hole pairs (EHPs) are created within the semiconductor. In direct-bandgap semiconductors, such as gallium arsenide (GaAs), this occurs efficiently when energy absorption prompts valence electrons to leap into the conduction band, leaving behind holes.
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...