Panasonic Intellectual Property Management Co., Ltd.

Mamoru Arimoto

Naofumi Hayashi

Koichi Kubo

Minoru Higuchi

Tsuyoshi Takahama

Takahiro Mishima

Ryo Goto

Yasuko Hirayama

Kazunori Fujita

Yutaka Arai

Yoshihide Kawashita

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

This solar cell apparatus is provided with: a long mounting frame having a guide rail section in an upper portion; and a fixing member, which is provided by being slid and moved in the longitudinal direction of the mounting frame, and which is fixed at a predetermined position of the mounting frame. The fixing member has: a base section that engages with the guide rail section; an upright wall section that is provided to stand on the base section; and insertion sections that extend from the upright wall section such that the insertion sections are inserted into a module frame of an eave-side solar cell module and a module frame of a ridge-side solar cell module.

Solar cell apparatus

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.

Solar cell

The solar cell () of the present invention is provided with an n-side electrode (), a p-side electrode (), and a photoelectric conversion unit () having a first main surface () and a second main surface (). The first main surface () includes an n-type surface () and a p-type surface (). The photoelectric conversion unit () has a semiconductor substrate () and a semiconductor layer (). The semiconductor substrate () has first and second main surfaces (). The semiconductor layer () is arranged on a portion of the first main surface (). The semiconductor layer () constitutes either the n-type surface () or the p-type surface (). The semiconductor layer () includes a relatively thick portion () and a relative thin portion (). The n-side electrode () or the p-side electrode () is arranged on at least the relatively thin portion () of the semiconductor layer (). The solar cell of the present invention, by means of the aforementioned configuration, is able to extend the lifetime of the minor carriers by means of the relatively thick portion (), to maintain low resistance between the semiconductor substrate () and the n-side electrode () by means of the relatively thin portion (), and to increase hole and electron collection efficiency.

Growing community of inventors

Osaka, Japan

Mamoru Arimoto