Space as an adverse environment: Vacuum surface and gamma ray irradiation effects on LED’s and photodiodes

Research output: Contribution to journalArticlepeer-review

Abstract

Vacuum surface and gamma-ray irradiation effects on photodiodes and LED’s play a significant role in the optical and electronic properties of these diodes, particularly in a space environment, which involves both ionizing radiation as v^ll as vacuum conditions. Exposure of GaAs light emitting diodes (LED’s) to vacuum gives rise to desorption of surface-adsorbed gases and subsequent free charge diffusion and redistribution that significantly alter diode properties. Changes in photodiode properties due to vacuum operation and y-radiation have also been observed. These changes are given, and a model explaining the changes is presented.

Original languageEnglish
Pages (from-to)2-4
Number of pages3
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume721
DOIs
StatePublished - 4 Feb 1987

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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