Sanyo Electric Co., Ltd.

Atsuo Mizukami

Masao Nakao

Ryohkan Yuasa

Masaaki Nemoto

Hideki Kuwahara

Yasuo Kishi

Masaru Yamano

Souichi Sakai

Hiroyuki Taniguchi

Shingo Terakado

Hiromi Mukaida

Kazuaki Shikiti

Hitoshi Katoh

The superconducting device according to the present invention is provided with a superconducting thin film of the Tl-Ba-Ca-Cu oxide deposited on a substrate thereof. Consequently, the device can be produced at a low cost because no rare earth elements are required. The superconducting thin film according to the present invention is formed by sputtering on substrate from a Tl-Ba-Ca-Cu oxide target by means of the sputtering method, followed by annealing in an oxidizing atmosphere. In this way, according to the present invention, it is possible to produce a superconducting thin film of the Tl-Ba-Ca-Cu oxide in a simple way by using an ordinary sputtering apparatus.

Superconducting device and method of producing superconducting thin film

The superconducting device according to the present invention is provided with a superconducting thin film of the Bi-Sr-Ca-Cu oxide deposited on a substrate thereof. Consequently, the device can be produced at a low cost because no rare earth elements are required. The superconducting thin film according to the present invention is formed by sputtering onto a substrate from a Bi-Sr-Ca-Cu oxide target, followed by annealing in an oxidizing atmosphere. In this way, it is possible to produce a superconducting thin film of the Bi-Sr-Ca-Cu oxide in a simple way by using an ordinary sputtering apparatus. In this method, it is preferable that a MgO substrate be used and the optimum annealing temperature is about 880.degree. C.

The present invention relates to a superconducting material that is, substances having compositions expressed by empirical formulae Y.sub.1-x Ba.sub.x CuO.sub.3, YBa.sub.2 Cu.sub.3 O.sub.7 and LnBa.sub.2 Cu.sub.3 O.sub.7 and critical temperatures of 90 K. or more, and to a method of producing the same in which for example Y.sub.2 O.sub.3, BaCO.sub.3 and CuO are blended at a mixture molar ratio of 1:2:6 and the resulting mixture is molded under pressure followed by slowly cooling in an oxidizing atmosphere.

Superconducting material and method of producing same

A method of manufacturing a photovoltaic device having a plurality of a photoelectric converting regions formed on an insulating surface of a substrate electrically connected in series, comprises the steps of dividing a first large area electrode layer on an insulating surface of a substrate into a plurality of first electrode layer portions corresponding to a plurality of photoelectric converting regions, depositing in succession a film-like photoelectric semiconductor layer and a second electrode layer lying continuously on the divided first electrode layers, and removing portions of the photoelectric semiconductor layer and the second electrode layer formed continuously to divide them into a plurality of portions corresponding to the plurality of the photoelectric converting regions.

Photovoltaic device and its manufacturing method

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Kashiwa, Japan

Atsuo Mizukami