
Kind of broad-band photonic valve and its application to silicon solar cells
Author(s) -
Jérôme Le Perchec
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.00a572
Subject(s) - materials science , optics , optoelectronics , photonics , transmittance , silicon , reflector (photography) , broadband , photovoltaic system , grating , physics , light source , ecology , biology
We investigate the dual optical behaviour of a photonic grating interface presenting a more or less important index contrast, showing either efficient broadband reflectivity, either high transmittance within the same spectral window, depending on the direction of the incident light. This behaviour is reminiscent of a diode one and could find interesting applications. A typical example is given for thin crystalline silicon solar cells where the rear side is directly nano-textured to trap light without metal reflector (bifacial device), well compatible with an integration in a photovoltaic module.