Photodiodes vs LEDs: Gallium Arsenide Sensitivity

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SUMMARY

Gallium arsenide (GaAs) photodiodes exhibit sensitivity to light emitted from gallium phosphide (GaP) LEDs, particularly in the green to red spectrum. GaP LEDs are known to effectively produce light in this range, while GaAs photodiodes are utilized in visible light applications, including solar cells. The sensitivity of GaAs photodiodes is influenced by their thickness and structural characteristics, which affect their response curve.

PREREQUISITES
  • Understanding of semiconductor materials, specifically gallium arsenide and gallium phosphide.
  • Knowledge of photodiode functionality and applications in visible light detection.
  • Familiarity with LED technology and its spectral output.
  • Basic principles of optical sensitivity and response curves in photonic devices.
NEXT STEPS
  • Research the spectral output characteristics of gallium phosphide LEDs.
  • Explore the response curves of gallium arsenide photodiodes in various thicknesses.
  • Investigate applications of GaAs photodiodes in solar energy conversion.
  • Learn about the fabrication techniques for optimizing photodiode structures.
USEFUL FOR

Electronics engineers, optical engineers, researchers in photonics, and anyone involved in the development or application of photodetectors and LEDs.

jamesjd
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Would a gallium arsenide photodiode be sensitive to light from a gallium phopsphide LED?
 
Science news on Phys.org
Probably :
You can make GaP LEDs in green->red
GaAs photodiodes certainly work in the visible (used as solar cells) don't know their response curve and it's probably sensitive to the thickness and structure of the diode.
 

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