由光引起的晶格膨胀导致高效的矿太阳能电池
Hsinhan Tsai1,2, Reza Asadpour3, Jean-Christophe Blancon1
1Division of Materials Physics and Application, Los Alamos National Laboratory (LANL), Los Alamos, NM 87545, USA.
Science (New York, N.Y.)
|April 7, 2018
概括
持续的光照会使混合矿格子均扩展,提高光伏设备的性能和稳定性. 这种由光引起的晶格扩张是高效太阳能电池的关键.
科学领域:
- 材料科学
- 光电子产品
- 固态物理
背景情况:
- 光诱导的结构动态对于混合矿光电子设备至关重要.
- 了解这些动态对于提高设备性能和稳定性至关重要.
研究的目的:
- 研究连续照明对混合矿薄膜的影响.
- 将结构变化与设备的性能和稳定性相关联.
主要方法:
- 在照明下的现场结构特征.
- 混合矿光伏设备的设备性能测试
主要成果:
- 连续的光照会导致混合矿薄膜的均扩张.
- 这种格子扩展使混合酸纯化物平面装置的功率转换效率从18.5%提高到20.5%.
- 格子扩展减少了接口应变,增加了开通电路电压和充电因子,但不影响长期稳定性 (> 1500 小时).
结论:
- 光引起的晶格扩张是高效混合矿光伏设备的关键因素.
- 这种现象通过减少界面能量障碍来提高设备的性能.
- 观察到的格子扩张不会对设备在长时间运行中的稳定性产生负面影响.
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