Forming contacts on diamonds

Details Forming contacts on diamonds Forming contacts on diamonds

1987-06-22

1989-05-23

Laroche, Eugene R.

Radiant energy

Invisible radiant energy responsive electric signalling

Semiconductor system

437 3, G01T 122

Patent

active

048333280

ABSTRACT:
The invention provides a method of preparing a detector which is sensitive to ionizing radiation or atomic emissions. The method includes the steps of forming at least two discrete conductive regions on a counting diamond by ion implantation, at a temperature below 500.degree. C. Subsequently, contacts are applied to the conductive regions to allow charged carriers liberated by the radiation to be detected by an electronic circuit. The invention extends to a detector prepared according to the method. An example of a detector according to the invention comprised a synthetic diamond having a paramagnetic nitrogen impurity concentration of less than 150 parts per million. Two conductive regions were formed on the diamond by bombardment with carbon ions, and contacts were formed on the conductive regions by the applications of silver-loaded epoxy paint.

REFERENCES:
patent: 3383567 (1968-05-01), King et al.
patent: 3665193 (1972-05-01), Kozlov et al.
patent: 4609520 (1986-09-01), Kronenberg
Peterstrom et al., Semiconductor Counters for Nuclear Radiations Produced by Ion Implantation, Nuclear Instruments and Methods 119, No. 1, (Jul. 1, 1974), pp. 151-155, Cl 250/370.

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