Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1982-03-03
1983-10-25
Powell, William A.
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
29572, 29576B, 148 15, 148187, 156648, 156655, 1566591, 204192E, 204192N, 357 30, H01L 21306, B44C 122, C03C 1500, C03C 2506
Patent
active
044117329
ABSTRACT:
In the manufacture of an infrared radiation detector device, a body of p-type cadmium mercury telluride is bombarded with ions to etch away a part of the body. From the etched-away part of the body an excess concentration of mercury is produced which acts as a dopant source converting an adjacent part of the body into n-type material. The energy of the bombarding ions is less than 30 keV. By appropriately choosing the ion dose this conversion from p-type to n-type can be effected over a depth considerably greater than the penetration depth of the ions. A p-n junction can be fabricated in this way for a photovoltaic detector. The conductivity type conversion may even be effected through the body thickness. The etching and conversion can be localized by masking part of the body surface against the ion bombardment.
REFERENCES:
patent: 4128467 (1978-12-01), Fischer
patent: 4301591 (1981-11-01), Withers
patent: 4310583 (1982-01-01), Baker et al.
patent: 4321615 (1982-03-01), Blackman et al.
"Properties of Ion-Implanted Junctions in Mercury-Cadmium-Telluride," A. Kolodny et al., IEEE Trans. on Electron Devices, vol. ED-27, No. 1, Jan. 1980, pp. 37-43.
Powell William A.
Schechter Marc D.
U.S. Philips Corporation
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