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拉德尔斯登-波珀矿纳米晶体作为高效矿太阳能电池的接口修改层

Biao Wang¹, Fangzhou Liu¹, Fanxiu Feng¹

¹Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology, School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, China.

|April 5, 2024

概括

矿太阳能电池 (PSC) 从修改后的CsPbBr3纳米晶体中受益. 这种现场方法提高了电荷传输和稳定性,实现了24.39%的功率转换效率.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
太阳能光伏发电是如何实现的

背景情况:

矿纳米晶 (NCs) 对于矿太阳能电池 (PSCs) 的界面被动化至关重要.
传统的长链连接体在NC上阻碍了电荷转移,连接体交换可以引入缺陷.
为PSC开发高效的被动化策略对于提高性能和稳定性至关重要.

研究的目的:

报告CsPbBr3NCs的新型现场修改,使用二甲基乙烯胺二氧化 (2-MeO-PEAI).
调查PSC中修改NC的微结构演变和被动化效应.
通过协同被动化,提高PSC中的电荷载体传输和设备稳定性.

主要方法:

在CsPbBr3NCs与2-MeO-PEAI的现场修改.
原子分辨率传输电子显微镜 (TEM) 用于研究NC微结构转换.
使用修改后的NCs进行界面被动化的PSC的制造和表征.

主要成果:

通过素交换观察到立方CsPbBr3转化为Ruddlesden-Popper相 (RPP) 纳米晶体.
通过RPPNCs和2-MeO-PEA+显著抑制了接口缺陷的协同消极.
在PSC中实现了24.39%的冠军功率转换效率 (PCE),现场修改了RPPNC.
经过修改的PSC的经营稳定性得到了改善.

结论:

在现场使用2-MeO-PEAI进行修改,有效地使CsPbBr3NC无活性,并诱导RPP相形成.
该RPPNCs和2-MeO-PEA+协同增强负载运输和减少PSCs中的缺陷.
这项工作提出了一种新且可行的接口被动化方法,提高PSC的效率和稳定性.

关键词:

接口缺陷接口缺陷链接交易所链接交易所矿的纳米晶体矿的纳米晶体矿太阳能电池是如何使用的

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相关概念视频

P-N junction

P-N junction

A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...