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Řičica T, Milasheuskaya Y, Růžičková Z, Němec P, Švanda P, Zmrhalová ZO, Jambor R, Bouška M. Synthesis and Application of Monomeric Chalcogenolates of 13 Group Elements. Chem Asian J 2019; 14:4229-4235. [PMID: 31589377 DOI: 10.1002/asia.201901085] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 10/04/2019] [Indexed: 11/12/2022]
Abstract
Utilization of the N,C,N-chelating ligand L (L={2,6-(Me2 NCH2 )2 C6 H3 }- ) in the chemistry of 13 group elements provided either N→In coordinated monomeric chalcogenides LIn(μ-E4 ) (E=S, Se) with unprecedented InE4 inorganic ring or monomeric chalcogenolates LM(EPh)2 (M=Ga, In). Complex LGa(SePh)2 was selected as the most suitable single source precursor (SSP) for the deposition of amorphous semiconducting GaSe thin films using spin coating method.
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Affiliation(s)
- Tomáš Řičica
- Department of General and Inorganic Chemistry, University of Pardubice, Studentská 95, 532 10, Pardubice, Czech Republic
| | - Yaraslava Milasheuskaya
- Department of General and Inorganic Chemistry, University of Pardubice, Studentská 95, 532 10, Pardubice, Czech Republic
| | - Zdeňka Růžičková
- Department of General and Inorganic Chemistry, University of Pardubice, Studentská 95, 532 10, Pardubice, Czech Republic
| | - Petr Němec
- Department of Graphic Art and Photophysics, University of Pardubice, Studentská 95, 532 10, Pardubice, Czech Republic
| | - Pavel Švanda
- Department of Mechanics Materials and Machine Parts, University of Pardubice, Studentská 95, 532 10, Pardubice, Czech Republic
| | - Zuzana Olmrová Zmrhalová
- Center of Materials and Nanotechnologies, University of Pardubice, Studentská 95, 532 10, Pardubice, Czech Republic
| | - Roman Jambor
- Department of General and Inorganic Chemistry, University of Pardubice, Studentská 95, 532 10, Pardubice, Czech Republic
| | - Marek Bouška
- Department of Graphic Art and Photophysics, University of Pardubice, Studentská 95, 532 10, Pardubice, Czech Republic
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Mandal D, Yadav RK, Mondal A, Bera SK, Aswin JR, Nemec P, Halenkovic T, Adarsh KV. Intensity mediated change in the sign of ultrafast third-order nonlinear optical response in As 2S 2 thin films. OPTICS LETTERS 2018; 43:4787-4790. [PMID: 30272740 DOI: 10.1364/ol.43.004787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 08/30/2018] [Indexed: 06/08/2023]
Abstract
We study experimentally and theoretically the intensity-dependent off-resonant ultrafast third-order nonlinear optical response of As2S2 thin films. At low intensity, we observed saturable absorption with a negative (self-defocusing) nonlinear refractive index (n2) which at higher intensity switched over to reverse saturable absorption with a change in the sign of n2 to positive (self-focusing). Our findings constitute compelling evidence on how to dynamically tune the optical response with the intensity that has its origin in the combined effect of two-photon absorption and Pauli blocking. The results were explained with the help of time-resolved measurements and rigorous theoretical and numerical simulations.
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Mochalov L, Dorosz D, Nezhdanov A, Kudryashov M, Zelentsov S, Usanov D, Logunov A, Mashin A, Gogova D. Investigation of the composition-structure-property relationship of As xTe 100-x films prepared by plasma deposition. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 191:211-216. [PMID: 29035777 DOI: 10.1016/j.saa.2017.10.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 10/05/2017] [Accepted: 10/10/2017] [Indexed: 06/07/2023]
Abstract
AsxTe100-x amorphous films of different chemical content were prepared by Plasma-Enhanced Chemical Vapor Deposition (PECVD). For the first time the optical properties of As-Te chalcogenide materials have been measured in UV-VIS-IR ranges (from 0.2 to 25μm) for a very wide range of chemical compositions (20-80at.% As). As-Te films have been tuned from 0.80 to 1.10eV. The IR results obtained have been juxtaposed with the Raman spectroscopy findings to establish the correlation between optical and structural properties of the materials developed. Reversible and irreversible changes in the phase composition of the As-Te films under annealing of the surface by laser irradiation have been demonstrated and studied. In order to determine the potential areas of application of the prepared As-Te films the thermal and photo sensitivity has been also investigated.
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Affiliation(s)
- Leonid Mochalov
- Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia; Nizhny Novgorod State Technical University n.a. R.E. Alekseev, Nizhny Novgorod, Russia
| | - Dominik Dorosz
- AGH University of Science and Technology in Kraków, Kraków, Małopolska, Poland
| | - Aleksey Nezhdanov
- Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia.
| | - Mikhail Kudryashov
- Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Sergey Zelentsov
- Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Dmitry Usanov
- Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Alexandr Logunov
- Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Aleksandr Mashin
- Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Daniela Gogova
- Central Lab of Solar Energy and New Energy Sources at the Bulg. Acad. Sci., Blvd. Tzarigradsko shose 72, 1784 Sofia, Bulgaria
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