Optoelectronic Devices

The interaction between light and electronics is central to many devices in common use; these include bar code readers (lasers), infra-red security cameras (photodetectors), solar cells, optical modulators for telecommunications signals, photodiodes, phototransistor, photomultipliers.

 Major advantages of spectroscopic ellipsometry for this application are:

  • Non-destructive analysis
  • Multi layer stack analysis
  • NIR measurement capability
  • Optical bandgap and determination of optical constants