在二维拉德尔斯登-波珀矿太阳能电池中改进电荷载体运输
Xue Dong1,2, Xin Li1, Xiaobo Wang1
1Frontiers Science Center for Flexible Electronics, Institute of Flexible Electronics, Northwestern Polytechnical University, Xi'an, 710072, China.
Advanced materials (Deerfield Beach, Fla.)
|February 5, 2024
概括
2D Ruddlesden-Popper (2DRP) 矿对太阳能电池的3D矿提供了更好的稳定性. 本综述分析了通过改善电荷运输特性来克服它们较低效率的策略.
科学领域:
- 材料科学 材料科学 材料科学
- 光电学是指光电子产品.
- 可再生能源可再生能源是可再生能源.
背景情况:
- 3D有机-无机化物矿可实现太阳能电池的高效率 (>26%),但存在不稳定性.
- 2D Ruddlesden-Popper (2DRP) 矿由于体积庞大的有机酸,提供了卓越的环境稳定性.
- 目前的2DRP矿太阳能电池的效率低于3D电池,主要是由于电荷传输不佳.
研究的目的:
- 分析二维拉德尔斯登 - 波珀矿太阳能电池效率低的原因.
- 审查2DRP矿中增强电荷载体运输的战略.
- 为了合理化未来的研究方向,高效和稳定的2DRP矿太阳能电池.
主要方法:
- 对限制2DRP矿太阳能电池性能的内在性质的分析.
- 对策略的审查,包括带隙调整,晶体方向控制,能量水平对齐和接口工程.
- 对2DRP矿太阳能电池优化现有文献的综合.
主要成果:
- 确定充电载体运输不足是2DRP矿太阳能电池的主要限制.
- 详细介绍了改善电荷传输的各种方法,例如带隙调节和接口修改.
- 强调需要进一步研究2DRP矿的结构性,介电性,光学性和激电性.
结论:
- 改善电荷载体运输对于释放稳定的二维拉德尔斯登-波珀矿太阳能电池的潜力至关重要.
- 带隙工程,结构控制和界面优化的结合可以提高设备性能.
- 未来的研究应该集中在一个整体的方法,以实现高效率和长期稳定性在2DRP矿太阳能电池.
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01:22Carrier Generation and Recombination
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The generation of electrical current in semiconductors is fundamentally driven by two mechanisms: drift and diffusion. These processes are essential for the functionality and performance of semiconductor-based devices.
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Drift Current:
The drift of charge carriers is started by an external electric field (E). Charged particles, such as electrons and holes, experience an acceleration between collisions with lattice atoms. For electrons, this results in a drift velocity (vd) given by:
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