稀土元素上转换材料在钙钛矿太阳能电池中应用的研究进展

Recent advances of rare-earth up-conversion materials doped perovskite solar cells

无机有机杂化钙钛矿太阳能电池被认为是最有发展前景的第三代光伏技术之一,经过短短几年时间的研究,钙钛矿太阳能电池现今的最高效率已经突破22%.随着钙钛矿太阳能电池的效率越来越接近理论效率,为了进一步提升电池效率,研究人员将目光投向了钙钛矿材料不能有效吸收的近红外波段.在本文中,我们回顾了近两年来将上转换材料与钙钛矿太阳能电池相结合的研究,将它们分成较为传统的方法和新型方法.传统的方法即是使用较为单一的NYF纳米颗粒对钙钛矿太阳能电池进行掺杂,利用稀土离子的上转换效应,吸收近红外光,扩宽钙钛矿的吸收范围,从而提升太阳能电池的性能;而新型的方法即是在传统的单一使用稀土离子的基础上,添加其他离子或者引入重掺杂半导体材料来进一步提升太阳能电池性能的方法,从实验结果看,这两种方法都取得了较好的结果.

Organic-inorganic hybrid perovskite solar cells are considered as one of the most promising third-generation photovoltaic technologies. After only a few years of research,the highest efficiency of perovskite solar cells has exceeded 22%. As the efficiency of perovskite solar cells has become closer to theoretical efficiency,researchers have turned their attention to the near-infrared bands that perovskite materials cannot effectively absorb,in order to further increase the efficiency. In this article,we review the research of combining up-conversion materials with perovskite solar cells in the past two years and classify them into more traditional methods and new methods. The traditional method is to use a relatively single NYF nanoparticle to dope the perovskite solar cell,utilize the up-conversion effect of rare earth ions,absorb the near infrared light,widen the absorption range of the perovskite,and thus enhance the performance of the solar cell. The new method is to add other ions or introduce heavily doped semiconductor materials to further enhance the performance of solar cells based on the traditional single use of rare earth ions. From the experimental results,both methods have achieved better performaces.