Expert Details

Expert in Pure Metals & Compound Semiconductors

Expert ID: 108119 Canada

Request Expert

SEMICONDUCTOR TECHNOLOGY; BRIDGMAN TECHNIQUE; CZOCHRALSKI PROCESS. Expert has 43 years of experience in the growth, characterization, and fabrication (to wafers, etc.) of the infrared sensitive compound semiconductors, including InSb, GaSb, InAs, CdTe, HgTe, and (Cd-Hg)Te. He presently is focusing primarily on InSb and GaSb. His expertise also includes Czochralski and Bridgeman crystal growth, epitaxial growth, X-ray crystallography, semiconductor cutting, lapping, polishing, etching, and electrical measurements.

INDIUM ANTIMONIDE; GALLIUM ANTIMONIDE. Expert has 43 years experience growing and processing these binary compound semiconductors sensitive to infrared radiation.

BINARY AND TERNARY COMPOUND SEMICONDUCTORS; THERMOELECTRIC MATERIALS; II-VI SEMICONDUCTOR MATERIAL. Expert has extensive experience in working with II-VI and III-V binary and ternary compound semiconductors, as well as thermoelectric materials. He is familiar with many facets of their growth, melting, doping, fabrication (including orientation control, cutting, and polishing), and characterization.

ELECTRONIC MATERIALS PROCESSING. Expert has expertise in electronic materials, especially with the processing of materials for electronic applications. He is proficient with many pure metals (5/9 - 8/9+), and is skilled with the related aspects of purification technology, material handling, and purity verification. His experience includes zone melting, electrolytic refining, pyrometallurgy, distillation, and sublimation.

HIGH PURITY METALS. Expert has over 35 years of experience in the ultra-refining of metals (Al, As, Bi, Cd, Ga, Au, In, Hg, Se, Ag, Sn, Te, Zn) by pyrometallurgy, distillation, zone-refining, electrolysis, and gas and vacuum treatment. He is also familiar with most means of characterizing metals, including emission, mass spectroscopy and GDMS, SIMS analysis, and cryogenic resistivity measurements.

ELECTRONIC MATERIALS BUSINESS OPERATIONS. Expert is well-versed in electronic materials business operations. He is very knowledgeable regarding process design, production facilities and troubleshooting, manpower considerations, and personal computer applications.

NEGATIVE-TYPE SEMICONDUCTOR MATERIAL; DOPED SEMICONDUCTOR. Ex[ert has 43 years experience in doping of compound semiconductors including dopant choice, efficiency/activation, segregation, and compensation.

POSITIVE-TYPE SEMICONDUCTOR MATERIAL. Expert has 43 years experience in doping of compound semiconductors including dopant choice, efficiency/activation, segregation, compensation, and high-resistivity of narrow-gap materials.

SEMICONDUCTOR PROPERTY. Specializing in narrow-gap compound semiconductors; he is experienced in electrical measurements, IR response, and physical characterization.

Expert has 15 years of hands-on experience in the purification of many metals to purities of 99.999% (5N) through 99.99999 (7N) purity. These include Aluminum, Arsenic, Antimony, Bismuth, Cadmium, Copper, Mercury, Tin, Silver, Thallium, Zinc and Gold. Processes included pyrometallurgy, electrolysis, distillation, sublimation and zone refining. Equipment was designed to provide plant capacity sufficient to supply 50% of the World requirements for those metals.


Year Degree Subject Institution
Year: 1984 Degree: Diploma in Advanced Management Subject: Banff School of Advanced Management Institution:
Year: 1966 Degree: BASc Subject: Engineering Physics (Metallurgy and Materials Science) Institution: University of Toronto

Work History

Years Employer Title Department Responsibilities
Years: 1991 to 2009 Employer: Firebird Semiconductors Title: President/CSO Department: Responsibilities: Founded firm 1991. Major supplier of InSb & GaSb; 6N & 7N In and Sb
All non-operations matters including planning, finance, Chief Scientist.
Years: 1990 to Present Employer: Undisclosed Title: Independent Consultant Department: Responsibilities: Offer independent consultancy in high purity metals and compound semiconductor production.
Years: 1989 to 1990 Employer: Johnson Matthey Electronics Title: Manager Department: Administrative and Technical Services Responsibilities: Site Manager during their attempted transition after purchase from Cominco Electronic Materials
Years: 1984 to 1989 Employer: Cominco Electronic Materials Title: Program Manager, Infrared Materials Department: Electronic Materials Division Responsibilities: Responsible for 50-person plant producing infrared-sensitive compounds semiconductors -primarily CdHgTe but also InSb, GaSb, CdTe and CdZnTe.

Internal consultant on high purity metals where I had headed the R&D and production of 14 pure metals for the prior 17 years.
Years: 1981 to 1984 Employer: Title: Senior Production Engineer Department: Electronic Materials Division Responsibilities: Responsibilities:
• Responsible for expansion of production facilities and for the production of infrared compound semiconductors.
• Staff of 5-10.
Years: 1967 to 1981 Employer: Cominco Limited Title: Research Engineer (LOA 1971-72) Department: Electronic Materials Division Responsibilities: Responsibilities:
• Designed, constructed and maintained conventional and unique equipment for the purification of 15 metals by pyrometallurgy, distillation, wet chemistry, electrolysis and zone refining.
• Supervised the growth of InSb and thermoelectric materials.
• Became and remain an expert on high purity metal production.
• Developed equipment for producing 6/9Al in 200 lb quantities, hi-ratio (40,000) Al for hyperconductor applications.
• Developed new processes for Te, Sb and Sn purification which halved their cost.
• Upscaled As production lot size from 7 to 500 lb.
• Redesign of all the zone refining equipment in the plant for efficiency and productivity.

International Experience

Years Country / Region Summary
Years: 1992 to 1993 Country / Region: South Africa/Pretoria Summary: He assisted in the stablishment of CdHgTe production at a Pretoria site.
Years: 1990 to 1991 Country / Region: Canada/Montreal Summary: He assisted a major Canadian firm establish high-purity metals production.

Career Accomplishments

Associations / Societies
Expert is a member of the Association of Professional Engineers and Geoscientists of British Columbia. He was the Canadian representative to the NATO CMT evaluation exchange, and has "Secret" security clearance.
Licenses / Certifications
Professional Engineer since 1971.
Professional Appointments
President & CSO
Publications and Patents Summary
He is the author of five technical publications including three chapters in technical books. He holds one Canadian and two U.S. patents.

Additional Experience

Vendor Selection
Expert has experience locating vendors of:
* Compound semiconductors
* Pure metals
* Quartz
* Graphite
* Pure chemicals
* Contract analytical work
* Surplus processing equipment
* Semiconductor process chemicals
* Polish abrasives.

He has access to the following resources:
* Printed materials
* Contacts
* Extensive literature database on III-V materials processing.

Language Skills

Language Proficiency
French Expert is fluent in French
German He is semi-fluent in German
Spanish He speaks conversational Spanish

Fields of Expertise

binary semiconductor material, Bridgman technique, Czochralski process, doped semiconductor, doping agent, electronic material processing, high-purity aluminum, high-purity arsenic, high-purity bismuth, high-purity cadmium, high-purity gallium, high-purity indium, high-purity mercury, high-purity metal, high-purity selenium, high-purity silver, high-purity tellurium, high-purity tin, high-purity zinc, II-VI semiconductor material, negative-type semiconductor material, positive-type semiconductor material, semiconductor doping, semiconductor material, semiconductor material property, semiconductor technology, semiconductor wafer, ternary semiconductor material, crystal growth, crystal polishing, III-V semiconductor material, indium compound, metal distillation, semiconductor wafer cleaning, semiconductor wafer etching, semiconductor wafer lapping, semiconductor wafer polishing, tellurium, X-ray diffraction, zone refining, antimony, cadmium, high-purity material, indium antimony, zoning, atomic layer deposition, semiconductor industry chemical, radiation sensitivity, compound semiconductor material, chemical mechanical polishing, cadmium telluride, gallium compound, cadmium compound, semiconductor material processing, chemical impurity material, defect, wet chemical etching, infrared radiation energy, pyrometallurgy, metal electrorefining, photoconductive material, zone melting, thermoelectric material, sublimation, semiconductor device, research management, refining, surface polishing, semiconductor passivation, metallurgy, mercury, infrared imaging, infrared detector, semiconductor growth, epitaxy, arsenic

Request Expert

Dev Tool:

Request: expert/compound-semiconductors-pure-metals
Matched Rewrite Rule: expert/([^/]+)(?:/([0-9]+))?/?$
Matched Rewrite Query: experts=compound-semiconductors-pure-metals&page=
Loaded Template: single-experts.php