Ukrainian Journal of Physical Optics 

Volume 22, Issue 4, 2021
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Structural, morphological and luminescence studies of Fe-doped PbI2 crystals

Rybak O. V. and Chekaylo M. V.

Lviv Polytechnic National University, 12 S. Bandera Street, Lviv 79013, Ukraine

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Abstract. We present the results of X-ray diffraction studies for undoped and Fe-doped single crystals of lead iodide in the concentration range 0.01–0.25 at. %. PbI2 and PbI2:Fe crystals are obtained by crystallization from a vapour phase in a closed system under over-stoichiometric iodine-vapour pressure. Morphology of the crystals has been analyzed by a scanning electron microscopy. The effect of iron doping on the low-temperature (T = 4.2 K) photoluminescence spectra of lead iodide has been elucidated.

Keywords: lead iodide crystals, iron doping, X-ray diffraction patterns, photoluminescence spectra 

UDC: 535.37
Ukr. J. Phys. Opt. 22 270-278
doi: 10.3116/16091833/22/4/270/2021
Received: 31.10.2021

Анотація. Наведено результати рентгеноструктурних досліджень нелегованих і легованих Fe монокристалів йодиду свинцю у діапазоні концентрацій 0,01–0,25 ат. %. Кристали PbI2 і PbI2:Fe одержано кристалізацією з парової фази в закритій системі під надстехіометричним тиском парів йоду. Морфологію цих кристалів проаналізовано за допомогою скануючого електронного мікроскопа. З’ясовано вплив легування залізом на низькотемпературні (Т = 4,2 К) спектри фотолюмінесценції йодиду свинцю.

Ключові слова: кристали йодиду свинцю, легування залізом, дифрактограми, спектри фотолюмінесценції
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