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Appl. Phys. Lett. 84, 151 (2004); http://dx.doi.org/10.1063/1.1637950 (3 pages)

Light-emitting transistor: Light emission from InGaP/GaAs heterojunction bipolar transistors

M. Feng, N. Holonyak, and W. Hafez

Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 208 North Wright Street, Urbana, Illinois 61801

(Received 29 August 2003; accepted 27 October 2003)

This letter reports the direct observation of the radiative recombination in the graded base layer of InGaP/GaAs heterojunction bipolar transistors (HBTs). For a 1 μm×16 μm emitter HBT, we demonstrate the change of the spontaneous light emission intensity Iout) as the base current ib) of the HBT is varied from 0 to 5 mA, i.e., an HBT operating as a light-emitting transistor. We also demonstrate output light modulation from the base layer at 1 MHz with the base current modulated at 1 MHz in normal transistor mode operation of the HBT. © 2004 American Institute of Physics.

© 2004 American Institute of Physics

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0003-6951 (print)  
1077-3118 (online)

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