  Organic-inorganic halide perovskite solar cells have enormous potential to
impact the existing photovoltaic industry. As realizing a higher conversion
efficiency of the solar cell is still the most crucial task, a great number of
schemes were proposed to minimize the carrier loss by optimizing the electrical
properties of the perovskite solar cells. Here, we focus on another significant
aspect that is to minimize the light loss by optimizing the light management to
gain a high efficiency for perovskite solar cells. In our scheme, the slotted
and inverted prism structured SiO2 layers are adopted to trap more light into
the solar cells, and a better transparent conducting oxide layer is employed to
reduce the parasitic absorption. For such an implementation, the efficiency and
the serviceable angle of the perovskite solar cell can be promoted
impressively. This proposal would shed new light on developing the
high-performance perovskite solar cells.
