Complex trapezoid grating for light trapping in thin-film solar cells: super-fine structure

• Autorzy: Fang Junfei , Gou Yuchun , Deng Jianping

Identyfikatory

DOI

10.37190/oa200305

• Języki publikacji: EN

Abstrakty

EN

The research of the optimal surface structure has attracted considerable interest because of its potential application in light trapping in thin-film solar cells (TFSCs). In this paper, a super-fine structure named complex trapezoid grating is proposed to improve the optical absorption comparing to the conventional simple trapezoid grating in a-Si:H TFSCs. The numerical calculation by utilizing rigorous coupled-wave analysis (RCWA) is conducted to obtain the optical absorption of the structured surface. The results demonstrate that, compared to a planar slab, the optimized-simple trapezoid grating shows 97% enhancement of power conversion efficiency η while the complex trapezoid grating shows 131% enhancement. Obviously, the complex trapezoid grating exhibits a better performance than the simple grating, which is due to the perfect antireflective effect and microcavity resonance effect. The angular response of the optical absorption in a-Si:H TFSCs was also investigated. The results further indicate that it is a better way to select the complex trapezoid grating in improving the optical absorption of silicon-based TFSCs.

Słowa kluczowe

EN

light trapping; complex trapezoid grating; rigorous coupled-wave analysis; solar cell

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2020
• Tom: Vol. 50, nr 3
• Strony: 391--400
• Opis fizyczny: Bibliogr. 26 poz., rys., tab.

Twórcy

autor

Fang Junfei

• Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong 723001, China
• School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong 723001, China

autor

Gou Yuchun

• Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong 723001, China
• School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong 723001, China

autor

Deng Jianping

• Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong 723001, China
• School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong 723001, China

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