在原子薄的ReS2中产生了一个巨大的内在光伏效应
Jing Wang1, Nannan Han2, Zhihua Lin2
1Key Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710129, China. xuetaogan@nwpu.edu.cn.
Nanoscale
|January 22, 2024
概括
研究人员在二维材料的二硫化 (ReS2) 中发现了一个巨大的光伏 (PV) 效应. 这一二维材料的突破可能会导致高效,小型化的太阳能电池和光电探测器.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 纳米技术纳米技术
背景情况:
- 非中心对称材料中的光伏 (PV) 效应可以超过Shockley-Queisser极限.
- 两维 (2D) 材料提供了高效率的光伏设备的潜力,因为其尺寸和带隙减少了.
研究的目的:
- 为了研究原子薄的二硫化物 (ReS2) 中巨大的内在光伏效应,其中心对称性被打破.
- 探索ReS2作为先进光伏应用材料的潜力.
主要方法:
- 制造石墨烯/ReS2/石墨烯三明治结构.
- 在可见光照明下对光伏性能的描述.
主要成果:
- 在基于ReS2的设备中观察到显著的短路电流 (Isc).
- 在2D材料中实现了PV效应的最高响应性 (110mA W-1) 和外部量子效率 (25.7%).
- 将巨大的光伏效应归因于自发偏振和在均层ReS2片中的脱偏振场.
结论:
- 原子薄的ReS2表现出巨大的内在光伏效应.
- ReS2是开发高效,小型化的光电探测器和太阳能电池的有希望的候选者.
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