薄片化准单晶硅电池光伏性能研究

马少波; 李进; 瞿立; 马润; 王忠良

doi:10.19912/j.0254-0096.tynxb.2023-1140

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太阳能学报 ›› 2024, Vol. 45 ›› Issue (11) : 170-177. DOI: 10.19912/j.0254-0096.tynxb.2023-1140

薄片化准单晶硅电池光伏性能研究

马少波¹, 李进², 瞿立², 马润², 王忠良¹

作者信息 +

STUDY ON PHOTOVOLTAIC PERFORMANCE OF QUASI-SINGLE CRYSTALLINE SILICON CELLS UNDER THINNING

Ma Shaobo¹, Li Jin², Qu Li², Ma Run², Wang Zhongliang¹

Author information +

文章历史 +

摘要

利用Quokka2软件对以准单晶硅片为衬底的太阳电池进行模拟仿真,研究硅片厚度对不同氧含量、体寿命的准单晶硅太阳电池转换效率以及功率损耗的影响。与直拉单晶硅相比,准单晶硅成本较低,硅片内缺陷较多、氧含量较低。通过将准单晶硅片应用于钝化发射极和背面电池（PERC）以及叉指背电极接触电池（IBC）,比较硅片在不同电池结构下的光伏性能。结果表明：随着硅片厚度从150 μm降到70 μm,Shockley-Read-Hall（SRH）复合损耗也随之降低,最高可达1.14 mW/cm²,但同时短路电流密度的下降也有0.95 mA/cm²,相互影响下电池转换效率仍有一定的提升。薄片化准单晶硅PERC太阳电池转换效率可达23.04%;薄片化准单晶硅IBC太阳电池转换效率可达23.73%。

Abstract

Quokka2 software was used to simulate solar cells with quasi-single crystalline silicon as substrate, and the effect of silicon thickness on the conversion efficiency and power loss of quasi-single crystalline silicon solar cells with different oxygen content and bulk lifetime was studied. Compared with Czochralski monocrystalline silicon, quasi-single crystalline silicon has lower cost, more defects and lower oxygen content. By applying quasi-single crystalline silicon to passivated emitter and back contact cells （PERC） and interdigitated-back contact cells （IBC）, the photovoltaic performance of quasi-single crystalline silicon wafers in different cell structures was compared. The results show that the Shockley-Read Hall （SRH） composite loss also decreases up to 1.14 mW/cm² with the thickness of the silicon wafer dropping from 150 μm to 70 μm, but the short circuit current decreases by 0.95 mA/cm² at the same time, and the cell conversion efficiency is still improved to some extent under the mutual influence. Under thinning, the conversion efficiency of quasi-single crystalline PERC solar cell can reach 23.04%. The conversion efficiency of quasi-single crystalline IBC solar cell can reach 23.73%.

导出引用

马少波, 李进, 瞿立, 马润, 王忠良. 薄片化准单晶硅电池光伏性能研究[J]. 太阳能学报. 2024, 45(11): 170-177 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1140

Ma Shaobo, Li Jin, Qu Li, Ma Run, Wang Zhongliang. STUDY ON PHOTOVOLTAIC PERFORMANCE OF QUASI-SINGLE CRYSTALLINE SILICON CELLS UNDER THINNING[J]. Acta Energiae Solaris Sinica. 2024, 45(11): 170-177 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1140

中图分类号： TM914.4

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