A novel trapezoidal profile of optimized diffraction grating for light trapping in thin silicon solar cells

• Autorzy: Dehdast M. , Bahrami A. , Mohammadnejad S.

Identyfikatory

DOI

10.5277/oa170107

• Języki publikacji: EN

Abstrakty

EN

In this paper, we propose a new design and comprehensive optimization process for improving the diffraction gratings used as the back reflector of silicon solar cells. For this process, the optimum refractive index and its corresponding available material which can be used as the grating material has been chosen as 1.57 and SiO₂, respectively. Also, all of geometric parameters which affect the performance of the grating, such as periodicity, height and depth of grating profiles have been studied and the appropriate values for each of them have been proposed. In order to optimize the profile of grating, a transition from triangular to rectangular structure has been considered and finally a specific trapezoidal profile has been chosen as the optimized grating back reflector which enhances the cell efficiency up to 6%. Simulation results show that the different grating profiles have the same duty cycle and therefore use the same amounts of materials.

Słowa kluczowe

EN

diffraction grating; light trapping; quantum efficiency; solar cell

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2017
• Tom: Vol. 47, nr 1
• Strony: 75--83
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Dehdast M.

• Electrical and Electronics Engineering Department, Nanoptronics Research Center, Iran University of Science and Technology, Tehran, Iran

autor

Bahrami A.

• Department of Electrical Engineering, Sahand University of Technology, Tabriz, Iran

autor

Mohammadnejad S.

• Electrical and Electronics Engineering Department, Nanoptronics Research Center, Iran University of Science and Technology, Tehran, Iran

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).