Title :
Coupling between radiation and internal modes: Light trapping in thin film solar cells with periodic texture
Author :
Haug, Franz-Josef ; Soderstrom, Karin ; Ballif, Christophe
Author_Institution :
Photovoltaics & Thin Film Electron. Lab., Ecole Polytech. Fed. de Lausanne (EPFL), Lausanne, Switzerland
Abstract :
We present amorphous silicon solar cells on random and periodic back reflector geometries. 1D gratings offer an intuitive understanding of the light trapping process by excitation of guided modes. Using the same period and similar shape, better performance is observed on 2D gratings due to a higher number of resonances.
Keywords :
amorphous semiconductors; diffraction gratings; elemental semiconductors; semiconductor thin films; silicon; solar cells; 1D gratings; 2D gratings; Si; amorphous silicon solar cells; guided mode excitation; internal mode; light trapping process; periodic back reflector geometry; periodic texture; radiation mode; random back reflector geometry; resonance number; thin film solar cells;
Conference_Titel :
Communications and Photonics Conference (ACP), 2012 Asia
Conference_Location :
Guangzhou
Print_ISBN :
978-1-4673-6274-0
