Mitsubishi Denki Kabushiki Kaisha

Takao Oda

Susumu Yoshida

Hideo Matsumoto

Shigeru Hokuyo

Kotaro Mitsui

Mari Kato

Katsumi Sato

A solar cell for connection in series with a plurality of like cells to provide a solar generator which can produce a desired output voltage. The cell includes a photovoltaic section of compound semiconductor layers stacked on a semiconductor substrate to form a p-n junction and a protective diode section electrically isolated from the photovoltaic section by a p-n junction. The photovoltaic and diode sections are connected in parallel and reverse polarity. The protective diode bypasses current in the solar generator when no light is incident on the photovoltaic section in parallel with the respective diode.

Solar cell

A solar cell includes a first conductivity type semiconductor substrate having two opposed surfaces, a second conductivity type first semiconductor layer disposed in the substrate at the first surface of the semiconductor substrate, a second conductivity type second semiconductor layer deposited on the first surface of the semiconductor substrate except for the first semiconductor layer production region, producing a pn junction with the semiconductor substrate having no reverse direction voltage blocking capability, a first conductivity type third semiconductor layer deposited on the second semiconductor layer, a first electrode covering the first semiconductor layer and connecting the third semiconductor layer with the first semiconductor layer, and a second electrode disposed at a second surface of the semiconductor substrate.

Solar cell and a production method therefor

A solution for crystal growth reserved in an upper chamber is taken from an opening formed in a slider mounted between the upper chamber and a middle chamber, and flown to the middle chamber containing a substrate, solid bodies in the solution being removed by two grids attached to a hole provided on the side of the middle chamber.

Boat for liquid phase epitaxial growth

An antireflective film (7, 8) for photoelectric devices comprises at least a layer having a refractive index being the largest on the side abutting on the light receiving surface (2a) or the light emitting surface of a photoelectric device and continuously decreasing according to the distance outward from said side.

Growing community of inventors

Itami, Japan

Takao Oda