Open AccessCombining tailor-made textures for light in-coupling and light trapping in liquid phase crystallized silicon thin-film solar cells
Author(s) -
Grit Köppel,
David Eisenhauer,
Bernd Rech,
Christiane Becker
Publication year - 2017
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.25.00a467
Subject(s) - materials science , silicon , planar , optoelectronics , optics , thin film , phase (matter) , absorption (acoustics) , trapping , coupling (piping) , nanotechnology , composite material , ecology , chemistry , physics , computer graphics (images) , organic chemistry , computer science , biology
We present tailor-made imprinted nanostructures for light management in liquid phase crystallized silicon thin-film solar cells providing both, increased jsc by enhanced absorption and excellent electronic material-quality with Voc-values >640mV. All superstrate textures successfully enhance light in-coupling in 10-20µm thick liquid phase crystallized silicon thin-films. Moreover, the effect of combining imprinted textures at the front side with individually optimized light trapping schemes at the rear side of the absorber layers on the optical properties is analyzed. With a silicon absorber layer thickness of 17µm maximum achievable short-circuit current density of 37.0mA/cm 2 is obtained, an increase by + 1.8mA/cm 2 (or 5.1%) compared to the optimized planar reference.