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- Q1144183 subject Q6562369.
- Q1144183 subject Q6938527.
- Q1144183 subject Q8411605.
- Q1144183 abstract "Russell Shoemaker Ohl (January 30, 1898 – March 20, 1987) was an American engineer who is generally recognized for patenting the modern solar cell (US Patent 2402662, "Light sensitive device").Ohl was a notable semiconductor researcher prior to the invention of the transistor. He was also known as R.S. Ohl.Russell Ohl’s specialized area of research was into the behavior of certain types of crystals. He worked on materials research in the 1930s at AT&T's Bell Labs’ Holmdel facility, investigating diode detectors suitable for high-frequency wireless, broadcasting, and military radar. His work was only understood by a handful of scientists in the organization, one of whom was Dr. Walter Brattain (one of the trio who invented the germanium bipolar transistor in 1947, and who would be awarded the Nobel Prize for Physics in 1956). Ohl, in 1939, discovered the PN barrier (or as it became known, the “P–N junction”). At the time hardly anyone knew anything about the impurities within these crystals, but Russell Ohl discovered the mechanism by which it worked. It was the impurities which made some sections more resistant to electrical flow than others, and thus it was the "barrier" between these areas of different purity that made the crystal work. Ohl later found that super-purifying germanium was the key to making repeatable and usable semiconductor material for diodes. All diodes (incl. LEDs, laser diodes etc.) are descendants of Ohl's work. His work with diodes led him later to develop the first silicon solar cells.".
- Q1144183 birthDate "1898-01-30".
- Q1144183 birthPlace Q142811.
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- Q1144183 deathDate "1987-03-20".
- Q1144183 deathPlace Q30.
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- Q1144183 field Q11023.
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- Q1144183 wikiPageExternalLink 4804_1.html.
- Q1144183 wikiPageExternalLink Oral-History:Russel_S._Ohl.
- Q1144183 wikiPageExternalLink index.html.
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- Q1144183 wikiPageWikiLink Q6562369.
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- Q1144183 birthDate "1898-01-30".
- Q1144183 birthPlace "Allentown, Pennsylvania, United States".
- Q1144183 deathDate "1987-03-20".
- Q1144183 deathPlace "Vista, California, United States".
- Q1144183 fields Q11023.
- Q1144183 name "Russell Ohl".
- Q1144183 residence Q30.
- Q1144183 type Person.
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- Q1144183 type Person.
- Q1144183 type Scientist.
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- Q1144183 type NaturalPerson.
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- Q1144183 comment "Russell Shoemaker Ohl (January 30, 1898 – March 20, 1987) was an American engineer who is generally recognized for patenting the modern solar cell (US Patent 2402662, "Light sensitive device").Ohl was a notable semiconductor researcher prior to the invention of the transistor. He was also known as R.S. Ohl.Russell Ohl’s specialized area of research was into the behavior of certain types of crystals.".
- Q1144183 label "Russell Ohl".
- Q1144183 name "Russell Ohl".