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三连接矿太阳能电池的压缩相隔
Zaiwei Wang1, Lewei Zeng1, Tong Zhu1
1Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada.
Nature
|March 28, 2023
概括
我们使用矿材料开发出稳定,高效的三联太阳能电池. 这些矿中的晶格扭曲抑制了相分离,提高了下一代光伏的性能.
科学领域:
- 材料科学
- 可再生能源
- 固态物理
背景情况:
- 矿太阳能电池提供可调节的带隙和易于制造,使其成为多连接光伏的有希望的产品.
- 宽带间隙矿 (>1.65 eV) 的光诱导相隔限制了效率和稳定性,特别是在需要2.0 eV顶部电池的三联设计中.
- 解决分相问题对于推进基于矿的太阳能电池技术至关重要.
研究的目的:
- 在化物/化物混合矿中研究格子扭曲和相分离之间的关系.
- 开发使用2.0 eV带隙吸收器的稳定,高效的全矿三联太阳能电池.
- 展示矿在先进的光伏应用中的潜力.
主要方法:
- 研究化物/化物混合矿中的晶格扭曲及其对离子迁移能量障碍的影响.
- 制造的三连接太阳能电池使用/混合无机矿,对顶部子电池具有显著的格子扭曲.
- 描述了制造的太阳能电池的效率,开放电路电压和运行稳定性.
主要成果:
- 通过增加离子迁移能量屏障,发现格子扭曲会抑制相分离.
- 实现了2.0 eV顶部电池的全矿三联太阳能电池的23.3%的认证功率转换效率.
- 这些设备表现出极好的稳定性,在运行420小时后保持了80%的初始效率.
结论:
- 格子扭曲是缓解相隔和提高宽带间隙矿稳定的关键因素.
- 这项研究首次证明了基于矿的三联太阳能电池的效率,为其商业化铺平了道路.
- 开发的矿战略为实现高效和稳定的多环节太阳能转换提供了可行的途径.
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