Panasonic Intellectual Property Management Co., Ltd.

Naofumi Hayashi

Takahiro Mishima

Tsuyoshi Takahama

Masato Shigematsu

Mamoru Arimoto

Keiichiro Masuko

Mitsuaki Morigami

Koichi Kubo

Minoru Higuchi

Tsutomu Yamaguchi

Tomohide Yoshida

This photovoltaic power generation device is provided with: a mounting bracket which is fixed to a roof and on which a frame, arranged on the ridge-side end of a solar cell module, and a frame, arranged on the eave-side end of a solar cell module, are mounted; and a fixing bracket which is arranged in the space between the frame and the frame, and which is fixed to the mounting bracket and holds said frames from above.

Photovoltaic power generation device

A solar cell is provided that comprising a semiconductor substrate having a first conductivity type; a first semiconductor layer having the first conductivity type, and on a principal surface of the semiconductor substrate; an insulation layer on the first semiconductor layer; a protective layer on the insulation layer; and a second semiconductor layer having a second conductivity type, and on the semiconductor substrate and the protective layer. A recessed region is positioned at a lateral side of the insulation layer, the recessed region formed by recessing a side surface of the insulation layer inward from a side surface of the first semiconductor layer and a side surface of the protective layer, and the second semiconductor layer is positioned in the recessed region above the first semiconductor layer in the recessed region.

Method of manufacturing solar cell and solar cell

A solar cell includes: a base substrate that has a principle surface; a first semiconductor layer provided in a first region on the principle surface; a second semiconductor layer provided in a second region on the principle surface; an n-side electrode provided on the first semiconductor layer; a p-side electrode provided on the second semiconductor layer; and grooves that separate the n-side electrode and the p-side electrode from each other. The respective widths of the grooves in a direction in which the n-side electrode and the p-side electrode are spaced apart are set to be wider in the outer peripheral region than in the inner region.

Solar cell and solar cell module

A solar cell includes: a semiconductor substrate having a light-receiving surface and a back surface; a first-conductivity-type first semiconductor layer on the back surface; a second-conductivity-type second semiconductor layer on the back surface; a first electrode electrically connected to the first semiconductor layer; a second electrode electrically connected to the second semiconductor layer; and an insulating layer in a boundary region between a first-conductivity-type region of the first semiconductor layer and a second-conductivity-type region of the second semiconductor layer. The insulating layer has an inclined side surface adjacent the second-conductivity-type region inclined such that the thickness of the insulating layer decreases with decreasing distance from the second-conductivity-type region. The width of the inclined surface in a direction perpendicular to the thickness direction of the insulating layer and toward the second-conductivity-type region is 10 to 300 times the thickness of the insulating layer in a region excluding the inclined surface.

Solar cell

A solar cell includes a semiconductor substrate of first conductivity type, including first and second principal surfaces; a region of the first conductivity type, including a semiconductor layer structure of the first conductivity type provided on the first principal surface; and a region of an second conductivity type, including a semiconductor layer structure of the second conductivity type provided on the first principal surface. The semiconductor layer structure of the first conductivity type is formed extending into the region of the second conductivity type. Thereby the solar cell is provided with a stack region where the semiconductor layer structure of the second conductivity type is formed on the semiconductor layer structure of the first conductivity type.

A solar cell manufacturing method includes: forming a first amorphous semiconductor layer of one conductivity type on a main surface of a semiconductor substrate; forming an insulation layer on the first amorphous semiconductor layer; etching to remove the insulation layer and the first amorphous semiconductor layer in a predetermined first region; forming a second amorphous semiconductor layer of an other conductivity type on the insulation layer after the etching, the other conductivity type being different from the one conductivity type; and etching to remove the second amorphous semiconductor layer in a predetermined second region, wherein the etching to remove the insulation layer and the first amorphous semiconductor layer in a predetermined first region includes: applying an etching paste to the insulation layer in the predetermined first region; and etching to remove the insulation layer and the first amorphous semiconductor layer in the predetermined first region using the etching paste.

Growing community of inventors

Osaka, Japan

Naofumi Hayashi