首页|Maskless fabrication of quasi-omnidirectional V-groove solar cells using an alkaline solution-based method
Maskless fabrication of quasi-omnidirectional V-groove solar cells using an alkaline solution-based method
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Silicon passivated emitter and rear contact(PERC)solar cells with V-groove texture were fabricated using maskless alkaline solution etching with in-house developed additive.Compared with the traditional pyramid texture,the V-groove texture possesses superior effective minority carrier lifetime,enhanced p-n junction quality and better applied filling factor(FF).In addition,a V-groove texture can greatly reduce the shading area and edge damage of front Ag electrodes when the V-groove direction is parallel to the gridline electrodes.Due to these factors,the V-groove solar cells have a higher efficiency(21.78％)than pyramid solar cells(21.62％).Interestingly,external quantum efficiency(EQE)and reflectance of the V-groove solar cells exhibit a slight decrease when the incident light angle(θ)is increased from 0° to 75°,which confirms the excellent quasi omnidirectionality of the V-groove solar cells.The proposed V-groove solar cell design shows a 2.84％relative enhancement of energy output over traditional pyramid solar cells.
V-groovealkaline etchingquasi omnidirectionalitysilicon solar cell
陈兴谦、王燕、陈伟、刘尧平、邢国光、冯博文、李昊臻、孙纵横、杜小龙
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Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China
Songshan Lake Materials Laboratory,Dongguan 523808,China
School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China
Beijing Hairou Laboratory,Beijing 101400,China
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Key-Area Research and Development Program of Guangdong Province,ChinaGuangdong Basic and Applied Basic Research FoundationNational Natural Science Foundation of China
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