In situ investigation of perovskite solar cells' efficiency and stability in a mimic stratospheric environment for high-altitude pseudo-satellites

被引:26
作者
Barbe, Jeremy [1 ]
Pockett, Adam [1 ]
Stoichkov, Vasil [1 ]
Hughes, Declan [1 ]
Lee, Harrison Ka Hin [1 ]
Carnie, Matthew [1 ]
Watson, Trystan [1 ]
Tsoi, Wing C. [1 ]
机构
[1] Swansea Univ, SPECIFIC, Bay Campus,Fabian Way, Swansea SA1 8EN, W Glam, Wales
基金
英国工程与自然科学研究理事会;
关键词
TEMPERATURE; PERFORMANCE; PHOTOVOLTAICS; DEGRADATION;
D O I
10.1039/c9tc04984c
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Perovskite solar cells with high power-per-weight have great potential to be used for aerospace applications such as satellites or high-altitude pseudo-satellites. The latter are unmanned aircraft exclusively powered by solar energy, typically flying in the stratosphere where the conditions of pressure, temperature and illumination are critically different from that on the earth's surface. In this work, we evaluate the performance and stability of high efficiency perovskite solar cells under a mimic stratospheric environment. In situ measurements under controlled conditions of pressure, temperature and illumination were developed. We show that the cells can operate efficiently in a large range of temperature from -50 degrees C to +20 degrees C, with a maximum power conversion efficiency at -20 degrees C, which is ideal for use in the stratosphere. Besides, performances are maintained after a number of temperature cycles down to -85 degrees C, representative of temperature variations due to diurnal cycles. An efficient encapsulation is developed, which could be critical to avoid the accelerated degradation of the cells under vacuum. Finally, a promising stability for 25 days of day-night cycles was demonstrated, which suggests that perovskite solar cells could be used to power high altitude pseudo-satellites.
引用
收藏
页码:1715 / 1721
页数:7
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