Mini Review
Effect of Rare Earth Doping on the Optical Quality of А2В6 Semiconductors
Yuriy P Gnatenko*, Anatoliy P Bukivskii and Petro M Bukivskij
Institute of Physics of NASU, Ukraine
Yuriy P Gnatenko, Department of Optics and Spectroscopy of Crystals, Institute of Physics of NASU, Ukraine.
Received Date: March 01, 2019; Published Date: March 12, 2019
Abstract
It is well known that rare earth elements (RE) have a characteristic configuration of their electron shell, namely, 4d104fn5s25p66s2 (n=1-14), where 4f-electrons form an unfilled electronic shell shielded by several filled shells [1,2]. Thus, doping of semiconductor materials with RE leads to the appearance of a system of discrete energy levels associated with the ground and excited states of RE ions. These states are strongly localized and weakly perceive the vibrations of the crystalline lattice. Therefore, the emission of RE ions, caused by optical transitions from excited to ground states of the ions, includes narrow lines that are commonly used for developing laser systems [3]. In addition, the development of LEDs for a wide spectral region requires using А3В5 semiconductors with wide band gaps doped with triply-charged RE ions. In this case, isovalent substitution of cations occurs.
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Yuriy P Gnatenko, Anatoliy P Bukivskii , Petro M Bukivskij. Effect of Rare Earth Doping on the Optical Quality of А2В6 Semiconductors. Mod Concept Material Sci. 1(2): 2019. MCMS.MS.ID.000507. DOI
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