氧气和水分诱导的化物双矿表面缺陷的愈合
Bhawna1, Aftab Alam1, M Aslam1
1Department of Physics, Indian Institute of Technology Bombay, Mumbai, India.
The Journal of chemical physics
|August 23, 2023
概括
氧气 (O2) 和水分等环境因素对化物双矿 (HDP) 薄膜产生重大影响. 氧气通过被动化缺陷来增加电阻,而水分通过产生质子来降低电阻,为HDP稳定提供了洞察力.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 环境科学 环境科学
背景情况:
- 化物双矿 (HDP) 是各种电子应用的有希望的材料.
- 了解对HDP稳定性的环境影响对于设备的寿命至关重要.
- 氧气和水分是影响半导体性能的关键环境因素.
研究的目的:
- 为了研究氧气和水分对HDP薄膜电气性能的影响.
- 阐明环境因素引起的电阻变化背后的机制.
- 评估氧气和水分对HDP缺陷被动化的潜力.
主要方法:
- 在不同的氧度和湿度水平下,对Cs2AgBiBr6膜进行了运输测量.
- 用表面分析技术研究吸附和缺陷被动化.
- 分析了电阻和电流电压特征作为温度和环境条件的函数.
主要成果:
- 由于缺陷被动化和减少离子迁移,增加的氧气度增加了两倍的薄膜电阻.
- 氧气吸附可逆地使表面缺陷无效,使缺陷密度降低约50%.
- 湿度暴露使薄膜电阻降低了一级,这归因于从水解离中产生质子.
结论:
- 氧气和水分对HDP薄膜电阻具有相反的影响.
- 氧气充当缺陷消极剂,增强电阻力,而水分增加导电性.
- 氧和水分的组合显示出对化物双矿中一般缺陷被动化策略的希望.
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