Shin-etsu Chemical Co., Ltd.

Sumio Sekiyama

Atsuo Ito

Tomoyoshi Furihata

Atsushi Yaginuma

Naoki Yamakawa

Junichi Tsukada

Hiroto Ohwada

Hyung Bae Kim

Yoshihiro Kubota

Provided is a method for producing a GaN layered substrate, comprising the steps of: subjecting a C-plane sapphire substratehaving an off-angle of 0.5° to 5° to a high-temperature nitriding treatment at 800° C. to 1,000° C. to carry out a surface treatment of the C-plane sapphire substrate; carrying out epitaxial growth of GaN on the surface of the surface-treated C-plane sapphire substrateto produce a GaN film carrier having a surface of an N polar face; forming an ion implantation regionby carrying out ion implantation on the GaN film; laminating and joining a support substratewith the GaN film-side surface of the ion-implanted GaN film carrier; and separating at the ion-implanted regionin the GaN filmto transfer a GaN thin filmonto the support substrate, to produce a GaN layered substratehaving, on the support substrate, a GaN thin filmhaving a surface of a Ga polar face. A GaN layered substrate having a good crystallinity and a surface of a Ga face is obtained by a single transfer process.

Method for producing GaN layered substrate

A method of manufacturing a solar cell module comprising pressing a first silicone gel sheet provided on a sunlight receiving surface of a solar cell string and a second silicone gel sheet provided on an opposite side sunlight non-receiving surface of the solar cell string in vacuum to encapsulate the solar cell string with the first and second silicone gel sheets; disposing the sunlight receiving surface side of the first silicone gel sheet on one surface of a transparent light receiving panel and disposing butyl rubber in a picture frame-like shape along an outer peripheral portion of a panel where the first silicone gel sheet is not formed and laying the light receiving panel and the light non-receiving panel or back sheet over each other with the silicone gel sheet-encapsulated solar cell string on the inside, and pressing them at 100 to 150&#xb0; C. in vacuum to press bond the light receiving surface panel and the light non-receiving surface panel or back sheet to each other through the butyl rubber.

Method of manufacturing solar cell module

A method of manufacturing a solar cell module comprising adhering a first silicone gel sheet to one surface of a transparent light receiving panel to be a sunlight incidence surface; adhering a second silicone gel sheet to one surface of a light non-receiving panel or back sheet on the side opposite to the sunlight incidence surface; disposing a solar cell string on the first silicone gel sheet of the light receiving panel, and disposing butyl rubber in a picture frame-like shape along an outer peripheral region of a panel where either of the silicone gel sheets are not formed; and laying the light receiving panel and the light non-receiving panel or back sheet over each other with the silicone gel sheets on the inside, and pressing them at 100 to 150&#xb0; C. in vacuum to encapsulate the solar cell string with the silicone gel sheets and press bond the light receiving panel and the light non-receiving panel or back sheet to each other through the butyl rubber.

Growing community of inventors

Annaka, Japan

Sumio Sekiyama