摘要
双结叠层太阳能电池由两个具有不同带隙吸收体的电池组成,通过差异化吸收更宽范围波长的太阳光,降低光子热化损失,已展现出打破单结太阳能电池Shockley-Queisser极限效率的巨大优势.获益于钙钛矿电池带隙可调和制备成本低的优点以及晶硅电池产业化的优势,钙钛矿/晶硅叠层太阳电池成为光伏领域的研究热点.本文系统的梳理了钙钛矿/晶硅叠层太阳能电池的最新研究进展,重点从钙钛矿顶电池、中间互联层和晶硅底电池的结构出发,总结出高效叠层器件在光学和电学方面的设计原则.本文还详细地分析了限制钙钛矿/晶硅叠层太阳能电池继续提效的关键因素及解决措施,这对于钙钛矿/晶硅叠层太阳能电池的产业化之路是非常重要的.最后,对下一代更高效率的低成本叠层太阳能电池进行了展望.我们认为随着对光伏器件效率要求越来越高,基于钙钛矿/晶硅叠层结构的三结电池将会成为下一代低成本高效电池的研究热点.
Double junction tandem solar cells consisting of two absorbers with designed different band gaps show great advantage in breaking the Shockley-Queisser limit efficiency of single junction solar cell by differential absorption of sunlight in a wider range of wavelengths and reducing the thermal loss of photons.Owing to the advantages of adjustable band gap and low cost of perovskite cells,perovskite/crystalline silicon tandem solar cells have become a research hotspot in photovoltaics.We systematically review the latest research progress of perovskite/crystalline silicon tandem solar cells.Focusing on the structure of perovskite top cells,intermediate interconnection layers and crystalline silicon bottom cells,we summarize the design principles of high-efficiency tandem devices in optical and electrical aspects.We find that the optical and electrical engineering of each layer structure in perovskite/crystalline silicon tandem solar cells goes through the whole process of device preparation.We also summarize the challenges of limiting the further improvement of the efficiency of the perovskite/crystalline silicon tandem solar cells and the corresponding improvement measures,which covers the following respects:1)Improving the balance between V_(oc)and J_(sc)of the broadband perovskite cell through additive engineering and interface engineering;2)improving the bandgap matching between the electrical layers and reducing the carrier transport barrier through adjusting the work function or conductivity of layers;3)improving the photocurrent coupling between sub-cells and the photocurrent of tandem solar cells by using light engineering and conformal deposition technology of perovskite cells.At present,there have been many technologies to improve the stability of perovskite solar cells,such as additive engineering and interface engineering,but the problem has hardly been solved.Therefore,improving the stability of broadband gap perovskite solar cells to the level of crystalline silicon solar cells will become an importan
作者
张美荣
祝曾伟
杨晓琴
于同旭
郁骁琦
卢荻
李顺峰
周大勇
杨辉
Zhang Mei-Rong;Zhu Zeng-Wei;Yang Xiao-Qin;Yu Tong-Xu;Yu Xiao-Qi;Lu Di;Li Shun-Feng;Zhou Da-Yong;Yang Hui(Gusu Laboratory of Materials,Suzhou 215123,China)
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2023年第5期445-459,共15页
Acta Physica Sinica
基金
江苏省碳达峰碳中和科技创新专项资金(产业前瞻与关键核心技术攻关项目)(批准号:BE2022021)
苏州市碳达峰碳中和科技支撑项目(批准号:ST202219)资助的课题。
关键词
叠层太阳能电池
宽带隙钙钛矿
晶硅
互联层
tandem solar cell
wide bandgap perovskite
crystalline silicon
interconnection layer
