关于集群在GaAs废弃物物理回收中的行为研究
Haosong Yu1, Xiumin Chen1, Baoqiang Xu1
1Key Laboratory of Vacuum Metallurgy for Nonferrous Metal of Yunnan Province, Kunming, 650093, China; The State Key Laboratory of Complex Non-ferrous Metal Resources Clear Utilization, Kunming University of Science and Technology, Kunming, 650093, China; National Engineering Research Center of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, China; School of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China.
Journal of environmental management
|January 17, 2024
概括
这项研究引入了一种真空热分解定向凝结工艺,从化 (GaAs) 废料中回收高纯度和. 该方法有效地分离了挥发性GaAs集群,提高了的纯度,没有废物排放.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 半导体制造业 半导体制造业
背景情况:
- 化 (GaAs) 是一个关键的半导体材料.
- 在GaAs晶圆生产过程中,会产生大量的废料.
- 目前的回收方法由于挥发性GaAs集群而遭受低纯度和物质损失.
研究的目的:
- 为了研究GaAs集群和的微观分离.
- 开发一种高效的GaAs废弃物回收工艺.
- 为了提高回收和的纯度.
主要方法:
- 热力学分析和动力学模拟.
- 开发一个真空热分解-定向冷凝过程.
- 优化分离参数:温度,时间和废料大小.
主要成果:
- 实现高纯度 (99.99%) 和 (99.5%) 的回收.
- 成功地在粉末形式中恢复了GaAs集群.
- 证明了GaAs集群与的有效分离.
结论:
- 拟议的方法有效地解决了GaAs集群和的分离挑战.
- 显著提高了的纯度,没有添加剂或废物排放.
- 减少环境影响和净化过程的复杂性.
相关概念视频
Carrier Generation and Recombination
577
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...
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...
577
Plastic Behavior
198
A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...
198


