密度功能理论 选 NiO 中的兴奋剂和移动性限制
Na-Young Lee1,2, Dong Hoe Kim3, Ji-Sang Park1,2
1Department of Nano Science and Technology, Sungkyunkwan University, Suwon 16419, Republic of Korea.
The journal of physical chemistry letters
|October 15, 2025
概括
和的兴奋剂在氧化 (NiO) 中创造了比原生缺陷更浅的受体,改善了矿太阳能电池的孔运输层. 这种兴奋剂保持了物质透明度,与Ni空缺不同.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 可再生能源是可再生能源的来源.
背景情况:
- 氧化 (NiO) 是一种重要的p型半导体,用于矿太阳能电池 (PSC) 中的孔输送层 (HTL).
- 它的宽带间隙,成本效益和稳定性使其具有吸引力,但故意的Ni空缺缺陷,同时使p型导电性成为可能,导致接受器水平高.
- 高缺陷度可能会对设备性能和光学性能产生负面影响.
研究的目的:
- 探索外部兴奋剂作为Ni空缺的替代品,以创建高效的p型NiO.
- 研究基组和过渡金属剂对Ni位点和15组元素对O位点的影响.
- 为了识别形成较浅的受体水平并保持光学透明度的兴奋剂.
主要方法:
- 使用密度函数理论 (DFT) 和哈伯德U校正的计算调查.
- 模拟各种外部剂,包括金属 (Li,Na) 和过渡金属在Ni位点上,以及15组元素在O位点上.
- 使用配置坐标图分析接受器水平和光学特性.
主要成果:
- 发现 (Li) 和 (Na) 与内在的Ni空缺相比,形成较浅的受体水平.
- 尼空位在捕获载体时呈现蓝色或黄色光谱的光辐射.
- 用添加的NiO显示出蓝紫光的发射,保持了材料的透明度.
结论:
- 和Na是PSC中创建有效的p型NiOHTL的有希望的剂,提供比Ni空缺更浅的接受器.
- 在NiO中化是特别有利于保持光学透明度,这对于有效的太阳能电池运行至关重要.
- 这些发现表明,超越传统的缺陷工程,优化基于NiO的HTL的途径.
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