Semiconductor Energy Laboratory Co., Ltd.

Shuichi Kugawa

Kazuo Nishi

Kunio Suzuki

Mikio Kinka

Akemi Satake

Yasuyuki Arai

Masayoshi Abe

Noriya Ishida

A portable electric appliance is provided with a solar energy accumulator. The accumulator is integrally mounted on the electric appliance when the appliance is desired to operate or be transported. When the portable electric appliance is not used, the accumulator is removed from the appliance and moved to a bright place.

Accumulator for portable computers

A solar cell comprises a plurality of series connected photoelectric conversion structures formed on a substrate. The conversion structure consists of a first semiconductor film on a P-type, an intrinsic semiconductor film formed on the first semiconductor film such that one end thereof extends beyond an end of the first semiconductor film and a second semiconductor film of a second, opposite conductivity type formed on the intrinsic semiconductor film such that one end thereof extends beyond the extended end of the intrinsic semiconductor film and makes direct electrical contact with an end of the first semiconductor film of the adjacent structure.

Photoelectric conversion device

Growing community of inventors

Atsugi, Japan

Shuichi Kugawa