Impact of structure complexity on optoelectronic and non-linear optical properties in quaternary Ag(Pb)–Ga(In)–Si(Ge)–S(Se) systems

Impact of structure complexity on optoelectronic and non-linear optical properties in quaternary Ag(Pb)–Ga(In)–Si(Ge)–S(Se) systems

A common feature of chalcogenide crystals is the presence of the chalcogen-chalcogen bonds, which result in very stable anion sub-structures (blocks) containing up to eight chalcogenide ions with the electric charge − 2 in units of the proton charge like systems [PS4]3-, [SiS4]4-, [GeS4]4-, [GeSe5]4...

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Bibliographic Details
Published in:Journal of alloys and compounds Vol. 909; p. 164636
Main Authors: Piasecki, M., Myronchuk, G., Khyzhun, O.Y., Fedorchuk, A., Andryievsky, B., Barchyi, I., Brik, M.
Format: Journal Article
Language:English
Published: Lausanne Elsevier B.V 15-07-2022
Elsevier BV
Subjects:
Anions
Chalcogen bonds
Chalcogenides
Chemical bonds
Chemical composition
Crystals
Electronic properties
Germanium
Lead
Non-linear optics
Nonlinear optics
Optical properties
Optics
Optoelectronics
Selenium
Silicon
Structure
Chalcogenides
Electronic properties
Structure
Non-linear optics
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Summary:A common feature of chalcogenide crystals is the presence of the chalcogen-chalcogen bonds, which result in very stable anion sub-structures (blocks) containing up to eight chalcogenide ions with the electric charge − 2 in units of the proton charge like systems [PS4]3-, [SiS4]4-, [GeS4]4-, [GeSe5]4-, [Ge2Se6]6-. The size of anion blocks, their mutual arrangement and chemical bonds between them consequently determine the optical and detection properties. By modifying the chemical composition with subsequent use of the laser irradiation, it is possible to change crystal optoelectronic properties in a wide spectral range. In the work, we discuss the influence of the structural properties on the stability, electronic, optical and nonlinear-optical efficiency for the group of quaternary chalcogenide crystals with Ag(Pb)–Ga(In)–Si(Ge)–S(Se) composition, that have already found practical applications in IR optoelectronics and non-linear optics. The presented analysis of chemical composition-structure - nonlinear optical properties relationship can be useful for the creation of effective quaternary crystals for nonlinear optics application. •Influence of the structure on the nonlinear-optical efficiency for quaternary chalcogenide crystals is discussed.•The phonon subsystem significantly affects the value of second order optical susceptibility.•Quaternary chalcogenides are more effective NLO materials for use in the medium IR range than their triple counterparts.•With the increasing band gap width increase the efficiency of generating the second harmonic.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2022.164636