Other

Kaneka Corporation

Yoshiteru Nitta

Yoshihiro Hamakawa

Takuji Nomura

Akihiro Sakamoto

Hiroaki Okamoto

Toshio Adachi

Tsuneo Tajima

Takayoshi Imai

Tooru Kojima

Takuji Hashimoto

A complex system where a plant group having a heat island phenomenon suppression effect and a solar cell having a carbon dioxide generation suppression effect are installed together. The purposes are to eliminate an adverse influence of both shadows of the plant group and the solar cell and to prevent the solar cell system from flying away by the wind pressure against the base side. The average height of the solar cell module is greater than that of the plant group. The plant group and the solar cell module are installed with a gap larger than the distance corresponding to the height difference between them. At least between the paired plant group and solar cell which face each other, an area for a person to walk through is provided. More than half of the ventilation area of the base side is covered with the plant group, a heat insulating material, and a moisture-retaining material.

Complex system of vegetation and solar cell

A photovoltaic device including a plurality of amorphous silicon unit cells each having a p-i-n structure layered in succession on a substrate made of stainless steel. A transparent electrically conductive layer, for withdrawing a photoelectromotive force in cooperation with the electrically conductive substrate, is formed on the uppermost unit cell, so that rays of light may be incident upon the photovoltaic device from the uppermost unit cell. Preferably, the thickness of the unit cells closer to the light incidence surface is selected to be less than the thickness of the unit cells farther from the light incident surface. Each of the unit cells is structured such that the n type, i type and p type layers are disposed in the above described order from the light incidence surface in terms of the impurity type.

Photovoltaic device

Growing community of inventors

Osaka, Japan

Yoshiteru Nitta