Realization of Quasi‐Omnidirectional Solar Cells with Superior Electrical Performance by All‐Solution‐Processed Si Nanopyramids,Advanced Science

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Realization of Quasi‐Omnidirectional Solar Cells with Superior Electrical Performance by All‐Solution‐Processed Si Nanopyramids
Advanced Science ( IF 14.3 ) Pub Date : 2017-07-06 , DOI: 10.1002/advs.201700200
Sihua Zhong ₁ , Wenjie Wang ₁ , Miao Tan ₁ , Yufeng Zhuang ₁ , Wenzhong Shen _{1,

2}

Affiliation

Large‐scale (156 mm × 156 mm) quasi‐omnidirectional solar cells are successfully realized and featured by keeping high cell performance over broad incident angles (θ), via employing Si nanopyramids (SiNPs) as surface texture. SiNPs are produced by the proposed metal‐assisted alkaline etching method, which is an all‐solution‐processed method and highly simple together with cost‐effective. Interestingly, compared to the conventional Si micropyramids (SiMPs)‐textured solar cells, the SiNPs‐textured solar cells possess lower carrier recombination and thus superior electrical performances, showing notable distinctions from other Si nanostructures‐textured solar cells. Furthermore, SiNPs‐textured solar cells have very little drop of quantum efficiency with increasing θ, demonstrating the quasi‐omnidirectional characteristic. As an overall result, both the SiNPs‐textured homojunction and heterojunction solar cells possess higher daily electric energy production with a maximum relative enhancement approaching 2.5%, when compared to their SiMPs‐textured counterparts. The quasi‐omnidirectional solar cell opens a new opportunity for photovoltaics to produce more electric energy with a low cost.

中文翻译：

通过全溶液处理的硅纳米锥实现具有优异电性能的准全向太阳能电池

通过使用Si纳米金字塔（SiNP）作为表面纹理，在宽入射角（θ）范围内保持高电池性能，成功实现了大型（156 mm×156 mm）准全向太阳能电池，并具有出色的性能。通过建议的金属辅助碱性蚀刻方法生产SiNP，这是一种全溶液处理的方法，非常简单且具有成本效益。有趣的是，与传统的Si微型金字塔（SiMPs）纹理的太阳能电池相比，SiNPs纹理的太阳能电池具有较低的载流子重组，因此具有优异的电性能，与其他Si纳米结构的太阳能电池有显着区别。此外，具有SiNPs结构的太阳能电池随着θ的增加量子效率几乎没有下降，证明了准全向特性。总的来说，与具有SiMPs结构的同类产品相比，具有SiNPs结构的同质结和异质结太阳能电池均具有更高的日发电量，最大相对增强率接近2.5％。准全向太阳能电池为光伏技术提供了以低成本生产更多电能的新机会。

更新日期：2017-07-06

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