Title :
Quantification of Optical Deflection by Laser-structured ZnO:Al
Author :
Berner, M. ; Sämann, Marc ; Garamoun, A. ; Schubert, M.B.
Author_Institution :
Inst. of Photovoltaics, Univ. of Stuttgart, Stuttgart, Germany
Abstract :
A novel camera-based measurement setup fully quantifies the transmitted radiation deflected by textured front electrodes for thin-film solar cells. The conventional measurement of angular intensity distribution only analyzes one polar plane. The new setup examines the optical scattering and/or diffraction over the complete hemisphere. The hemispheric intensity distribution of laser-structured ZnO:Al proves reduced specular transmission and, hence, improved light trapping.
Keywords :
aluminium; electrodes; laser materials processing; light scattering; optical materials; solar cells; zinc compounds; ZnO:Al; angular intensity distribution measurement; camera-based measurement setup; diffraction; hemispheric intensity distribution; laser-structured ZnO:Al; light trapping; optical deflection; optical scattering; polar plane; specular transmission; textured front electrodes; thin film solar cells; transmitted radiation; Collimators; Laser beams; Lenses; Measurement by laser beam; Optical diffraction; Photovoltaic cells; Semiconductor device measurement; Angular intensity distribution (AID); hemispheric intensity distribution (HID); laser-structured ZnO:Al; optical characterization;
Journal_Title :
Photovoltaics, IEEE Journal of
DOI :
10.1109/JPHOTOV.2012.2208942
