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Transistor Emits Infrared Radiation

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Daniel S. Burgess

A research team at the University of Illinois at Urbana-Champaign has developed a transistor that emits infrared radiation and offers standard electrical output. The device, which produces modulated optical emission in phase with a base current at 1 MHz, suggests applications in displays, communications and optical integrated circuitry, and offers a challenge to optoelectronics to re-examine the fundamental speed limits of devices such as LEDs and laser diodes. InGaP/GaAs heterojunction bipolar transistors fabricated at the University of Illinois at Urbana-Champaign produce an infrared...Read full article

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