The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 10, 1991
Filed:
Apr. 30, 1990
Akitoshi Yokota, Nara, JP;
Yukihiko Nakata, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An amorphous solar cell is provided having a junction structure of a p layer, an i layer and n layer where an electromotive force is generated when the cell is irradiated by light. The amorphous solar cell includes an upper cell and a lower cell which each have an i layer. The upper and lower cells are stacked so that the upper cell is located on the light incident side. An output end of the upper cell and an output end of the lower cell are connected in parallel. The thickness of the i layer of the lower cell is 3000 .ANG. or less. Because the thickness of the i layer of the lower cell is 3000 .ANG. or less, the amorphous solar cell has a high initial photoelectric conversion efficiency and properties which are unlikely to be degraded by light.