Abstract
Metamaterial mirrors as back reflector is an innovative design for light trapping phenomenon in thin silicon solar cells. An optimized design for achieving maximum reflection in such metamaterial mirror is presented in this paper. In conventional metallic mirrors when light is reflected a phase reversal occurs and thus the intensity is reduced at the reflective surface. This effect is highly undesirable in thin solar cell applications where metal is used both as an electrical contact and an optical mirror. A mirror whose reflection phase can be varied from a perfect electric mirror (conventional metallic mirror) to that of a perfect magnetic mirror can be used to overcome this challenge in thin silicon solar cells. In a magnetic mirror no phase reversal of the incident electromagnetic wave occurs resulting in maximum electric field enhancement at the mirror surface. Such magnetic mirrors are classified as metamaterial mirrors. Simulations have been done with ComsolMultiphysics to obtain electric field and reflection for both TE (Transverse Electric) and TM (Transverse Magnetic) polarized light to obtain the optimized geometry. The generation rate and phase conservation has been observed from simulation when magnetic mirror is placed at the back of silicon substrate. The enhancement in the electric field is significantly increased which will lead to an enhanced absorption in the thin solar absorber resulting in high efficiencies.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
