| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a light-condensing type photovoltaic power generating device, whose reflectance at the interface between a light condensing device and photovoltaic device is reduced and whose optical efficiency and power generation are substantially increased. SOLUTION: This light-condensing type photovoltaic power generating device has a light-condensing device, which has a light receiving surface and a reflective surface and in which a space sandwiched between the light receiving surface and the reflective surface is filled with a medium having a refractive index higher than that outside of the light receiving surface and a photovoltaic device, at least part of which surface is brought into contact with the light condensing device. The refractive index of at least a region, brought into contact with the photovoltaic device in the medium, is higher than those of other in the medium. Furthermore, the refractive index in a region brought into contact with the light receiving surface in the medium is the lowest in the medium, and the refractive index of a region brought into contact with the photovoltaic crevice in the medium is the highest in the medium.</p> |
