Journal of Electronic Materials

, Volume 38, Issue 8, pp 1522-1527

First online:

AFM Characterization of Raman Laser-Induced Damage on CdZnTe Crystal Surfaces

  • Lucile C. TeagueAffiliated withSavannah River National Laboratory Email author 
  • , Samantha A. HawkinsAffiliated withSavannah River National Laboratory
  • , Martine C. DuffAffiliated withSavannah River National Laboratory
  • , Michael GrozaAffiliated withFisk University
  • , Vladimir BuligaAffiliated withFisk University
  • , Arnold BurgerAffiliated withFisk University

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Raman laser studies of detector-grade CdZnTe crystals show an increase in intensity of the Te peaks of the Raman spectra even at very low laser powers. In this study, atomic force microscopy (AFM) was used to characterize the extent of damage to the CdZnTe crystal surface following exposure to the Raman laser. AFM images revealed localized surface damage in the areas exposed to the Raman laser beam. Additional studies using conductive-probe AFM techniques provided localized electrical information for the laser-induced Te-rich areas.


CZT CdZnTe atomic force microscopy Raman radiation detection