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Fluctuations in Luminescent Junctions

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1 Author(s)
Brophy, James J. ; IIT Research Institute, Chicago, Illinois

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.1709929 

Optical‐emission fluctuations from three types of GaAs and Ga(AsP) p‐n junction luminescent diodes have been examined. Characteristic time constants of 12×10-3 and 0.45×10-3 sec are observed in both the optical noise spectra and forward‐current noise spectra of a GaAs diode in which carrier recombinations occur in the junction space‐charge region. More heavily doped junctions (∼1019 cm-3), in which tunnel currents predominate, exhibit 1/f noise. In either case, correlation exists between optical‐emission noise and forward‐current noise, suggesting that carrier transitions responsible for both effects are the same. Only simple photon noise is observed from a Ga(AsP) diode in which junction diffusion currents are significant, although the forward noise spectrum is also 1/f noise.

Published in:

Journal of Applied Physics  (Volume:38 ,  Issue: 6 )