Canon Kabushiki Kaisha

Yoshimitsu Hayashi

Yoshifumi Takeyama

Koji Tsuzuki

Tsutomu Murakami

Koichi Shimizu

Shozo Kasai

Tsunenobu Satoi

Masayuki Kusakari

Ippei Sawayama

Before electrically connecting at least two photovoltaic elements, a medium capable of absorbing at least 10% or more of a light having a wavelength of 0.4 &#x3bc;m to 2.0 &#x3bc;m is provided on an electric connection portion of the photovoltaic element, whereby the present invention provides a method of electrically connecting a group of photovoltaic elements to one another with a high yield and easy automatization.

Non-contact treatment method

Before electrically connecting at least two photovoltaic elements, a medium capable of absorbing at least 10% or more of a light having a wavelength of 0.4 &mgr;m to 2.0 &mgr;m is provided on an electric connection portion of the photovoltaic element, whereby the present invention provides a method of electrically connecting a group of photovoltaic elements to one another with a high yield and easy automatization.

Method of producing photovoltaic element module

Photovoltaic element module and its production method, and non-contact treatment method

Laser light having a wavelength where a thin-film semiconductor layer can absorb the laser light is applied on the side of the thin-film semiconductor layer to join a semiconductor-holding member and a metal member by welding. Materials can be joined at a sufficiently high strength and with long term stability especially when a metal member of the same or different type is welded to a conductive substrate which is a part of a photovoltaic device.

Welding process and photovoltaic device

Growing community of inventors

Yokohama, Japan

Yoshimitsu Hayashi