Matsushita Electric Industrial Co., Ltd.

Nobuo Nakayama

Kazuya Ueda

Mikio Murozono

Fuminari Saito

Kuniyoshi Omura

Tetsuya Aramoto

Kenzi Nagamine

A method of manufacturing a solar cell, comprising the steps of forming a layer of n-type compound semiconductor, a layer of p-type compound semiconductor, and an electrode layer on a glass substrate, wherein at least one of said steps of forming a layer of compound semiconductor layer comprises preparing a paste by mixing a semiconductor raw material and a viscous agent, applying said paste to said substrate, drying said paste to harden it, and firing the dried paste, and vibrating said substrate during or after the application of the paste, to remove the bubbles in the paste, resulting in a semiconductor layer which is smooth, dense, and having good adhesion, thus realizing a solar cell with improved and uniform characteristics.

Method of manufacturing solar cell

A hand-held scanner, namely, a hand-operated optical reader, capable of selectively and partially reading a necessary portion of a document. The hand-held scanner is equipped with a speed control device capable of producing a load for controlling the moving speed of the hand-operated scanning unit for approximate uniform motion to enable a compact and inexpensive apparatus to reproduce an original picture easily and accurately.

Hand-held scanner with a speed control device

Growing community of inventors

Hirakata, Japan

Nobuo Nakayama