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EP0569094A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method of providing an ohmic contact on a ZnSe layer

Assignee: Koninklijke Philips NV
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Filing: 1993-05-04
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Granted: —
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Expires: 2013-05-04
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Abstract

Abstract Method of providing an ohmic contact on a ZnSe layer (2) provided on a substrate (1) by wetting the layer with a Hg containing liquid and heating the layer to a temperature in excess of 200°C. The layer of ZnSe (2) is wetted and heated by immersing the substrate in a Hg containing bath heated to a temperature in excess of 200°C but not greater than 350° for a time greater than 120 minutes. The method can be used to make an ohmic contact on a p-type, nitrogen doped layer of ZnSe. After a time greater than 120 minutes a contact layer is formed on the layer which consists of Hg x Zn 1-x Se, in which x varying from 0 at the surface of the ZnSe layer to 1 at the outer surface of the contact layer. The layer grown forms an ohmic contact to a layer of nitrogen doped ZnSe.

Inventors

  • 👤 Nikhil c/o INT. OCTROOIBUREAU B.V. Taskar
  • 👤 Babar c/o Int. Octrooibureau B.V. Khan

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 23:14
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/83; H10H20/832; H10P; H10P14/00; H10P14/40; H10P14/46; H10P14/47; H10H20/81; H10H20/822; H10H20/823

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 74 words
Method of providing an ohmic contact on a ZnSe layer provided on a substrate by wetting the layer with a Hg containing liquid and heating the layer to a temperature in excess of 200°C, characterized in that, the layer of ZnSe is wetted and heated by immersing the substrate in a Hg containing bath heated to a temperature in excess of 200°C but not greater than 350°C for a time greater than 120 minutes.
Claim 2
Dependent Claim 20 words
Method as claimed in Claim 1, characterized in that a doping amount of Li is added to the Hg bath.
Claim 3
Dependent Claim 29 words
Method as claimed in Claim 1 or 2, characterized in that the substrate is immersed in the heated Hg containing bath for a period of 2 to 24 hours.

References Cited (Backward Citations)

US4123295A Cited
JPH01313932A Cited
JPH02122565A Cited

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