Extended wavelength InGaAs on GaAs hybrid image sensors

Joachim John, Lars Zimmermann, Patrick Merken, Stefan De Groote, Gustaaf Borghs, Chris Van Hoof, Stefan Nemeth, Thierry Colin

Research output: Contribution to journalConference articlepeer-review

Abstract

Short wavelength infrared (SWIR) photovoltaic diode structures made of InGaAs material were grown on GaAs by means of molecular beam epitaxy. Growth quality and composition of the layers are determined by HRXRD. The electrical characterization is performed by Current-Bias characterization (proposal) and spectral resolved measurements to determine the resistance area product (R 0A) and the spectral responsivity (R) of diodes. The processing is performed with standard photolithography and micro-structuring techniques aiming at the production of ID and 2D infrared camera arrays. The diced IR sensor is flip chip assembled on a Silicon read out integrated circuit (ROIC). Linear arrays of 256 pixels with 25 μm pitch were fabricated as well as focal plane arrays (FPA) of 256 × 320 pixel with 30 μm pitch. Measures of electrical interconnection yield will be shown. Functionality is proven for different applications up to 2.5 μm wavelength.

Original languageEnglish
Pages (from-to)263-270
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5152
DOIs
Publication statusPublished - 2003
EventInfrared Spaceborne Remote Sensing XI - San Diego, CA, United States
Duration: 6 Aug 20038 Aug 2003

Keywords

  • Extended ihgaas
  • Focal plane array
  • Hybridization
  • Linear array
  • SWIR

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