用于晶硅异质结太阳电池的透明导电薄膜研究进展

RESEARCH PROGRESS OF TCO FILMS FOR SILICON HETEROJUNCTION SOLAR CELLS

提升晶硅异质结(HJT)太阳电池的电流有望进一步提高电池效率,透明导电氧化物薄膜(TCO)是影响HJT太阳电池电流的重要功能层。该文首先介绍了TCO薄膜的自身特性,包括掺杂元素和掺杂比例、制备技术对薄膜特性的影响。同时总结了薄膜特性对HJT太阳电池性能的影响。最后阐述了TCO薄膜应用的最新进展及发展趋势,增加盖帽层或多层TCO薄膜有望改善薄膜整体特性及电池性能。以期指导TCO薄膜特性的优化,从而进一步提高HJT太阳电池效率,加快HJT太阳电池产业化进程。

Increasing the current of the silicon heterojunction(HJT)solar cell is expected to further improve its efficiency.Transparent conductive oxide film(TCO)is an important functional layer that affects the current of the HJT solar cell.In this paper,the characteristics of TCO films are firstly introduced,including the effects of doping elements,doping ratios and preparation techniques on the film properties.Moreover,the influence of film properties on the performance of HJT cells is summarised.Finally,the latest progress and development trend of TCO film application are described.Increasing the cap layer or adopting multilayer TCO film structure is expected to improve the characteristics of TCO films and solar cell performance.It is expected to guide the optimization of TCO films characteristics,so as to further improve the efficiency of HJT solar cell and accelerate its industrialization process.