Soft x-ray quantum efficiency of silicon hybrid CMOS detectors

Zachary R. Prieskorn, Stephen D. Bongiorno, David N. Burrows, Abraham D. Falcone, Christopher V. Griffith, Jonathan Nikoleyczik

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Scopus citations

Abstract

Si Hybrid CMOS detectors (HCDs) are sensitive to X-rays between approximately 0.2 - 20 keV. HCDs can provide superior performance to traditional CCDs in multiple areas: faster read out time, windowed read out mode, less susceptible to radiation & micrometeoroid damage, and lower power consumption. X-ray detectors designed for use in astronomical observatories must have an optical blocking filter to prevent the detectors from being saturated by optical light. We have previously reported on the successful deposition of an Al optical blocking layer directly onto the surface of HCDs. These blocking filters were deposited with multiple thicknesses from 180 - 1000 Å and successfully block optical light at all thicknesses, with minimal impact expected on quantum efficiency at the energies of interest for these detectors. The thin Al layer is not expected to impact quantum efficiency at the energies of interest for these detectors. We report energy dependent soft X-ray quantum efficiency measurements for multiple HCDs with different optical blocking filter thicknesses.

Original languageEnglish (US)
Title of host publicationHigh Energy, Optical, and Infrared Detectors for Astronomy VI
PublisherSPIE
ISBN (Print)9780819496225
DOIs
StatePublished - 2014
EventHigh Energy, Optical, and Infrared Detectors for Astronomy VI - Montreal, QC, Canada
Duration: Jun 22 2014Jun 25 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9154
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherHigh Energy, Optical, and Infrared Detectors for Astronomy VI
CountryCanada
CityMontreal, QC
Period6/22/146/25/14

All Science Journal Classification (ASJC) codes

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

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