2008/11/19 by Mario M. Jakas, Jakas, Mario M., Francisco J. Llopis +2
Engineering · Materials Science · Physics and Astronomy · #Advanced optical system design #FOS: Physical sciences #Optical Coatings and Gratings #Optics (physics.optics) #physics.optics #solar cell performance optimization
paper · pdf · doi:10.48550/arxiv.0811.3085
13 pages, 4 figures
arxiv created 2008/11/19 · openalex publication_date 2008/11/19 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The increase of cell efficiency resulting from using a diffraction grating as a back reflector is investigated. An enhancement coefficient is introduced as a figure of merit that accounts for the ability of the rear grating to increase the generation of electric carriers. According to results in this paper, a diffraction-grating-like relief on the rear face of the photovoltaic cell may reduce the intensity of the specular reflection while favouring the intensity of high-angle rays. In this way, the path-length of reflected rays increases, and so does the efficiency of the cell.