Optical image recognition using monolithic tandem pinip and pinpin heterojunctions: A comparison

P. Louro, M. Vieira, A. Steiger Garção, Yu Vygranenko, M. Fernandes

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

Abstract

Optimized a-SiC:H multilayer devices based on two different tandem configurations (TCO/pinpi'n/TCO and TCO/pini'p/TCO) are compared and tested for proper image recognition and color separation process using an optical readout technique. In both configurations the doped layers are based on a-SiC:H to increase image resolution and to prevent image blurring. To profit from the light filtering properties of the active absorbers, the intrinsic layer of the front diode (i layer) is based on a-SiC:H and the back one (i ' layer) on a-Si:H The effect of the applied voltage on the color selectivity is discussed. Results show that the relative spectral response curves demonstrate rather good separation between the red, green and blue basic colors. Combining the information obtained under positive and negative applied bias a colour image is acquired, using the same optical technique either in pinpi 'n or in the pini 'p configuration, without colour filters or pixel architecture.

Original languageEnglish
Title of host publication2007 International Conference on Sensor Technologies and Applications SENSORCOMM 2007, Proceedings
Pages361-365
Number of pages5
DOIs
Publication statusPublished - 1 Dec 2007
Event2007 International Conference on Sensor Technologies and Applications, SENSORCOMM 2007 - Valencia, Spain
Duration: 14 Oct 200720 Oct 2007

Conference

Conference2007 International Conference on Sensor Technologies and Applications, SENSORCOMM 2007
CountrySpain
CityValencia
Period14/10/0720/10/07

Keywords

  • Sensors
  • Color
  • Dendrites (metallography)
  • Detectors
  • Filtration
  • Geometrical optics
  • Image recognition
  • Image resolution
  • Image sensors
  • Isomers
  • Optical filters
  • Optical multilayers
  • Optical properties

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  • Cite this

    Louro, P., Vieira, M., Garção, A. S., Vygranenko, Y., & Fernandes, M. (2007). Optical image recognition using monolithic tandem pinip and pinpin heterojunctions: A comparison. In 2007 International Conference on Sensor Technologies and Applications SENSORCOMM 2007, Proceedings (pp. 361-365). [4394948] https://doi.org/10.1109/SENSORCOMM.2007.4394948