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US4387387A Expired / Lapsed US ⏱️ 0.0 years remaining

PN Or PIN junction type semiconductor photoelectric conversion device

Assignee: Semiconductor Energy Laboratory Co Ltd
•
Filing: 1980-08-12
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Granted: 1983-06-07
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Expires: 2000-08-12
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Abstract

Abstract A PN or PIN junction type semiconductor photoelectric conversion device which comprises a semiconductor layer having formed therein at least one PN or PIN junction, a light-transparent, conductive layer disposed on the semiconductor layer and a conductive layer disposed on the semiconductor layer on the opposite side from the light-transparent, conductive layer, and in which light is incident to the semiconductor layer from the outside of the light-transparent, conductive layer, a photoelectric conversion function is obtained by the presence of the barrier of the PN or PIN junction formed in the semiconductor layer. In such a PN or PIN junction type semiconductor photoelectric conversion device, a light-transparent, current-permeable nitride layer is artificially formed between the semiconductor layer and the light-transparent, conductive layer. The light-transparent, current-permeable nitride layer is a conductive, insulating or semi-insulating layer. The conductive nitride layer is made of a conductive metal nitride. The insulating nitride layer is made of a silicon nitride. The semi-insulating nitride layer is made of a silicon nitride and a conductive metal nitride.

Inventors

  • 👤 Shunpei Yamazaki

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 20:23
CPC Classifications
H; H10; H10F; H10F10/00; H10F10/10; H10F10/16; H10F10/164; H10F10/12; H10F10/14; H10F10/17; H10F10/18; H10F77/00; H10F77/20; H10F77/244; H10F77/30; H10F77/306; H10F77/311; H10F77/315; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02E10/547; Y02E10/548

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 129 words
A PN or PIN junction type semiconductor photoelectric conversion device which comprises a semiconductor layer having formed therein at least one PN or PIN junction, a light-transparent, conductive layer disposed on the semiconductor layer, and a conductive layer disposed on the semiconductor layer on the opposite side from the light-transparent, conductive layer, characterized in that a light-transparent, current-permeable nitride layer is interposed between the semiconductor layer and the light-transparent, conductive layer, and that nitrogen introduced into at least the region of the semiconductor layer on the side of the light-transparent, current-permeable nitride layer forms a wide-to-narrow energy band gap structure in which the region of the semiconductor layer having introduced thereinto the nitrogen has a larger energy band gap than does a region of the semiconductor layer adjacent thereto.
Claim 2
Dependent Claim 129 words
A PN or PIN junction type semiconductor photoelectric conversion device which comprises a semiconductor layer having formed therein at least one PN or PIN junction, a light-transparent, conductive layer disposed on the semiconductor layer, and a conductive layer disposed on the semiconductor layer on the opposite side from the light-transparent, conductive layer, characterized in that a light-transparent, current-permeable nitride layer is interposed between the semiconductor layer and the light-transparent, conductive layer, and that nitrogen introduced into at least the region of the semiconductor layer on the side of the light-transparent, current-permeable nitride layer forms a wide-to-narrow energy band gap structure in which the region of the semiconductor layer having introduced thereinto the nitrogen has a larger energy band gap than does a region of the semiconductor layer adjacent thereto.
Claim 3
Dependent Claim 44 words
A PN or PIN junction type semiconductor photoelectric conversion device according to claim 1 wherein the light-transparent, current-permeable nitride layer is formed of a conductive metal nitride selected from the group consisting of titanium nitride, tantalum nitride, tin nitride, tungsten nitride and chromium nitride.
Claim 4
Dependent Claim 21 words
A PN or PIN junction type semiconductor photoelectric conversion device according to claim 1 wherein the light-transparent conductive layer contains nitrogen.

References Cited (Backward Citations)

US4177474A Cited
US4139858A Cited
US4162505A Cited
US4167015A Cited
US4281208A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-06-06 1986-12-06 1987-06-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-06-06 1990-12-06 1991-06-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-06-06 1994-12-06 1995-06-07 $7700.00 Window Closed / Lapsed

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