在用Mg合的CuO薄膜中出现持久的间歇性缺陷
Adithya Prakash1, Vikash Mishra1, M G Mahesha1
1Department of Physics, Manipal Institute of Technology, Manipal Academy of Higher Education 576104 India mahesha.mg@manipal.edu.
RSC advances
|March 27, 2024
概括
兴奋剂通过增加氧气间位缺陷来增强氧化铜 (CuO) 薄膜导电性. 这项研究系统地研究了Mg兴奋剂对CuO光电子特性的影响.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 半导体技术 半导体技术
背景情况:
- 半导体薄膜对于电子设备至关重要.
- 兴奋剂是调整材料特性的一个关键方法.
- 氧化铜 (CuO) 是一个有前途的半导体材料.
研究的目的:
- 为了研究 (Mg) 兴奋剂对氧化铜 (CuO) 薄膜光电子特性的影响.
- 了解氧介质 (Oi) 缺陷在基化CuO中的作用.
- 为了将兴奋剂诱导的结构和缺陷变化与电气和光学性能增强相关联.
主要方法:
- 喷雾热解技术用于薄膜制备.
- 在CuO薄膜中,Mg兴奋剂度 (2-10%) 不同.
- 使用X射线衍射,FESEM,拉曼,PL,XPS和Hall测量的表征.
- 密度函数理论 (DFT) 分析以获得理论见解.
主要成果:
- 胺兴奋剂导致结晶体大小的减少和带间隙的扩大.
- 观察到氧气间歇性 (Oi) 缺陷在Mg兴奋剂时增加.
- 增强的载体度和改善的电导率在化片中得到了实现.
结论:
- 胺兴奋剂有效地改变了CuO薄膜的光电子特性.
- 氧气间位缺陷在提高CuO的电导率方面发挥着重要作用.
- 该研究为潜在的应用提供了对CuOMg兴奋剂影响的全面了解.
相关概念视频
01:26Imperfections in Crystal Structure: Stoichiometric Point Defects
Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...
01:29Imperfections in Crystal Structure: Non-Stoichiometric Defects
Non-stoichiometric defects refer to a type of defect in the crystal structure of a compound where the ratio of its constituent elements deviates from the ideal stoichiometric ratio. There are two main types of non-stoichiometric defects: metal excess defects and metal deficiency defects.Metal excess defects occur when there is a slight surplus of metal ions than what is required by the stoichiometric ratio of the compound. For example, heating a sodium chloride crystal in sodium vapor results...