Exciton spectra of layered PbI2 and PbI2:Zr crystals

Abstract

We have analyzed the surface morphology of single crystal samples of lead diiodide and studied the absorption edge and the temperature variation of their photoluminescence spectra. We have established that the zirconium impurity is uniformly incorporated into the crystal lattice of the samples and promotes appreciable quenching of photoluminescence due to formation of electron traps.

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Correspondence to V. B. Kapustyanyk.

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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 74, No. 2, pp. 252–257, March–April, 2007.

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Kapustyanyk, V.B., Pasternak, R.M., Kalush, A.Z. et al. Exciton spectra of layered PbI2 and PbI2:Zr crystals. J Appl Spectrosc 74, 283–288 (2007). https://doi.org/10.1007/s10812-007-0044-5

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Key words

  • lead diiodide
  • zirconium
  • absorption edge
  • photoluminescence spectrum