钝化
材料科学
太阳能电池
共发射极
薄脆饼
抛光
光电子学
光学
光伏系统
电流密度
棱锥(几何)
复合材料
电气工程
工程类
物理
图层(电子)
量子力学
作者
Jinchang Ding,Shuai Zou,Lei Shen,Jonghyung Choi,Junhu Cui,Dichun Yuan,Chengbin Wu,Zheng Lu,Yulian Zeng,Ronglei Fan,Yadong Xu,Baochen Liao,Mingrong Shen,Xiaodong Su
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2022-05-11
卷期号:5 (5): 5875-5885
被引量:2
标识
DOI:10.1021/acsaem.2c00220
摘要
Currently, a bifacial passivated emitter and rear cell (bi-PERC) is the mainstream solar cell technology in the photovoltaic industry. In this paper, we studied the influence of rear pyramid morphologies with different slope angles on the overall optical and electrical properties of bi-PERC solar cells. With the help of simulations, we first obtained a macro understanding of the influence of rear surface morphologies on the absorbed and lost photon current density of bi-PERC solar cells. In practice, both the optical and passivation properties of solar cells were affected by the rear surface morphology. A smoother rear surface was proven to be favorable for rear passivation and unfavorable for rear-side light trapping. Rear surface morphologies also contributed to back-reflection and back-scattering effects that influenced the front-side light trapping. Consequently, the highest front-side average efficiency of 22.86%, with an average bifaciality factor of 76.02%, was achieved for the bi-PERC solar cells using a modified acidic polishing process. Furthermore, the calculated equivalent bifacial efficiency showed that a maximum value of 29.82% could be obtained at an albedo value of 40%. Finally, we further evaluated the optical performances of the corresponding single-cell modules.
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