Symmetric and asymmetric wave-guides for multi-striped orthogonal photon-photocarrier-propagation solar cells (MOPSC)

摘要

Waveguide-coupled orthogonal photon-photocarrier propagation solar cell (MOPSC) in which the photons propagate in the direction orthogonal to that of the photocarriers'is of potential interest for a high efficiency solar cell. We have studied feasibility of symmetric waveguides for MOPSC. The symmetric waveguide with refractive index modulation structure would not give a very high efficiency due to the reason originated from the spatial and time-reversal symmetries. To overcome the problem, we propose an asymmetric redirection waveguide consisting of periodic parabola mirrors.