Laboratory of Optoelectronics “Andrei Andriesh”

Laboratory of Optoelectronics „Andrei Andrieș” (LO) is the successor of the Laboratory „Photoelectrical Properties of Semiconductors” founded in 1970 at the Institute of Applied Physics of the ASM (Head of the Laboratory – Acad. Andrei Andrieș, since 2006 – Dr.Sci. Mihail Iovu).

Academician Andrei Andrieș	Dr.Sci., conf., Mihail Iovu

The scientific activity of the LO is focused on the investigations of the electrical, optical, photoelectrical and luminescent characteristics of different binary and ternary vitreous chalcogenide semiconductor systems, also called chalcogenide glasses. In the center of attention are the following issues: obtaining of photosensitive thin films from chalcogenide glasses; elaboration of registration media of optical and holographic information; development of different fiber optic sensors for the IR spectrum, of photonic and optoelectronic devices.

The LO staff conduct research into such chalcogenide glasses as As₂S₃, As₂Se₃, As₂S₃-Sb₂S₃, As₂S₃:Sn, As₂Se₃:Sn, As-Se-Ge, As-S-Se-Sn, Ge-Sb-Te, including those doped with rare-earth elements (Pr³⁺, Dy³⁺, Nd³⁺, Sm³⁺, Ho³⁺); into nanocomposite materials from coordonated polymers with rare-earth compounds (Eu³⁺, Tb³⁺); and into nanocomposites polymer/inorganic semiconductors (As₂Se₃, As₂S₃, CdS, CdSe, etc). Theoretical aspects of quantum effects caused by the reduced dimensions in nanocomposite materials are also dealt with. The LO have participated in the implementation of several multilateral international grants and projects such as NATO, FP7, INTAS, CRDF, STCU, as well as bilateral ones. The LO have scientific collaboration ties with the research centres of excellence from France, Great Britain, Greece, Hungary, Italy, Poland,Romania, Russia, and Ukraine.

The LO collaborators E.P. Colomeico, V.I. Verlan, M.A. Iovu, M.R. Cernii, V.G.Abașchin, A.A.Simașchevici, V.V. Bivol, I.P. Culeac, E.A. Achimova, I.A. Cojocaru, S.A. Malkov, V. Dolghieru, E.G. Hancevskaya, N. Gumeniuc, D.V. Harea have prepared and defended their PhD disssertations in physics, and .D. Șutov, M.S. Iovu, D.I. Țiuleanu, V.N. Ciumaș, A.I. Buzdugan, A.A. Popescu – dissertations for the degree of Dr.Hab.( Dr.Sci.) – the second, higher degree in the Republic of Moldova.

Laboratory staff:

2022

• Iovu, M.; Verlan, V.; Bordian, O.; Enachescu, M.; Popescu, A.; Savastru, D.; Enache, L.-B.; Rosoiu, S.; Bardeanu, M.; Lazar, O.A.; Mihai, G. Synthesis of glassy composite As_0.63S_2.70Sb_1.37Te_0.30 and its physical properties. Optoelectron Adv Mat – RC. 2022, 16(11-12), 538—544 (IF: 0,556).
• Iaseniuc, O.; Iovu, M.; Rosoiu, S.; Bardeanu, M.; Enache, L.-B.; Mihai, G.; Bordianu, O.; Verlan, V.; Culeac, I.; Cojocaru, I.; Enachescu, M. Structural analysis of As-S-Sb-Te polycrystalline nanostructured semiconductors. Chalcogenide Lett. 2022, 19(11), 841—846. Doi: 10.15251/CL.2022.1911.841 (IF: 0,855).
• Канаровский, Е.Ю.; Иалтыченко, О.В. Учёт синергии витаминов E и C в кинетической модели перекисного окисления липидов. Электронная обработка материалов. 2022, 58(5), 44—50. Doi: 10.52577/eom.2022.58.5.44.
• Hajdeu-Chicarosh, E.; Levcenko, S.; Sernac, R.; Bodnar, I.V.; Victorov, I.A.; Iaseniuc, O.; Caballero, R.; Manuel Merino, J.; Arushanov, E.; León, M. Spectroscopic ellipsometry study of Cu₂Zn(Ge_xSi_1-x)Se₄ bulk poly-crystals. Solid State Sci. 2022, 132, 106982. Doi: 10.1016/j.solidstatesciences.2022.106982 (IF: 3,752).
• Culeac, I.P.; Verlan, V.I.; Bordian, O.T.; Zubareva, V.E.; Iovu, M.S.; Bulhac, I.I.; Siminel, N.A.; Siminel, A.V.; Mihai, G.; Enachescu, M. Synthesis and Characterization of Coordination Compound [Eu(µ₂-OC₂H₅)(btfa)(NO₃)(phen)]₂phen with High Luminescence Efficiency. Nanomaterials. 2022, 12(16), 2788-1—2788-14. Doi: 10.3390/nano12162788 (IF: 5,719).
• Iaseniuc, O.; Iovu, M. Characterization of some optical and physical properties of As_11.2S_48.0Sb_28.8Te_12.0 and As_20.8S_48.0Sb_19.2Te_12.0 nanostructured polycrystalline semiconductors. Chalcogenide Lett. 2022, 19(2), 117—124 (IF: 0,885).
• Iaseniuc, O.V.; Iovu, M.S. Structural Characterization of Some As-S-Sb-Te Nanostructured Materials. În:ICNBME 2021, IFMBE Proceedings 87, 2022.5th International Conference on Nanotechnologies and Biomedical Engineering, November 3–5, 2021, Chisinau, Moldova, p. 77—83 . Doi:10.1007/978-3-030-92328-0_11.
• Bordian, O.; Verlan, V.; Iovu, M.; Culeac, I.; Zubareva, V.; Enachescu, M.; Bojin, D.; Siminel, A. Photoluminescence Properties of Eu(TTA)₃(Ph₃PO)₂. În:ICNBME 2021, IFMBE Proceedings 87, 2022.5th International Conference on Nanotechnologies and Biomedical Engineering, November 3–5, 2021, Chisinau, Moldova, p. 84—91 . Doi: 10.1007/978-3-030-92328-0_12.

2021

• Iaseniuc, O. Transient photocurrent behavior in amorphous thin film heterostructures. Moldavian Journal of the Physical Sciences. 2021, 20(2), 163—169. Doi: 10.53081/mjps.2021.20-2.07.
• Nastas, А.M.; Iovu, М.S.; Agishev, I.N.; Gavrusenok, I.V.; Melnikova,  Е.А.; Stashkevitch, I.V.; Tolstik, А.L.  Formation of holographic diffraction gratings in thin films of chalcogenide glassy semiconductors. J Belarus State Univ Physics. 2021, 3, 4—11. Doi: 10.33581/2520-2243-2021-3-4-11.
• Iaseniuc, O.V.; Iovu, M.S.; Pantazi, C.; Lazar, O.A.; Moise, C.C.; Enachescu, M. Assessing the structural properties of Ge_xAs_xSe_1-2x chalcogenide systems through cross-correlated STEM, XRD and micro-Raman studies. Optoelectron Adv Mat – RC. 2021, 15(9-10), 498—503 (IF: 0,441).
• Iovu, M.S.; Verlan, V.I.; Culeac, I.P.; Bordian, O.; Zubareva, V.E.; Bulhac, I.; Enachescu, M.; Siminel, N.A.; Siminel, A.V. Coordination complex [Eu(μ₂-OC₂H₅)(btfa)(NO₃) (phen)]2.phen with high luminescent efficiency. Moldavian Journal of the Physical Sciences. 2021, 20(1), 73—83. Doi: 10.53081/mjps.2021.20-1.06.
• Sergeev, S.A.; Meshalkin, A.Y.; Iovu, M.S. Diffraction Structures Formed by Two Crossed Superimposed Diffraction Gratings. Surf Eng Appl Elect. 2021, 57(2), 207—216. Doi:  10.3103/S1068375521020095.

2020

• Iaseniuc, O.V.; Iovu, M.S. Photoconductivity spectra of amorphous multilayer structures . În: Proceedings SPIE Vol. 11718 (31 December 2020). Conferemce ”Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies X”, 20-23 August 2020, România, p. 117180X. Doi: 10.1117/12.2571100.
• Bordian, O.; Verlan, V.; Culeac, I.; Bulhac, I.; Zubarev, V. Managing the luminescence efficiency of the organic compounds of europium(III) through preparation technology . În: Proceedings SPIE Vol. 11718 (31 December 2020). Conferemce ”Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies X”, 20-23 August 2020, România, p. 1171817. Doi: 10.1117/12.2571186.
• Сергеев, С.А.; Мешалкин, А.Ю.; Йову, М.С. Дифракционные структуры, сформированные двумя скрещенными наложенными дифракционными решетками. Электронная обработка материалов. 2020, 56(6), 51—60. Doi: 10.5281/zenodo.4299754.
• Sinyavskii, E.P.; Sokovnich, S.M. Optical Properties of Doped Nanowires in External Electric and Magnetic Fields. Opt Spectrosc. 2020, 128(11), 1885—1891. Doi: 10.1134/S0030400X20110259 (IF: 0,748).
• Iaseniuc, O.; Iovu, M. Absorption and photoconductivity spectra of amorphous multilayer structures. Beilstein J Nanotech. 2020, 11, 1757—1763. Doi: 10.3762/bjnano.11.158 (IF: 2,612).
• Iaseniuc, O.; Iovu, M. Photoconductivity of chalcogenide thin film heterostructures. P Romanian Acad A. 2020, 21(3), 231—235 (IF: 1,294).
• Nastas, A.M.; Iovu, M.S.; Tolstik, A.L. Effect of Corona Discharge on the Optical Properties of Thin-Film Cu–As₂Se₃ Structures. Opt Spectrosc. 2020, 128(2), 231—235. Doi: 10.1134/S0030400X20020174 (IF: 0,801).
• Popescu, A.A.; Savastru, D.; Baschir, L.; Verlan, V.V.; Bordian, O.; Stafe, M.; Puscas, N. Surface plasmon resonance in As₂Se₃ planar waveguides for the IR spectral region. Chalcogenide Lett. 2020, 17(3), 117—122. (IF: 0,977).
• Nastas, A.; Iaseniuc, O.; Iovu, M. Influence of corona discharge on photoinduced modification of optical characteristic of Cu–As₂Se₃ thin film structures. Chalcogenide Lett. 2020, 17(1), 15—18 (IF: 0,977).
• Sergeev, S.A.; Iovu, M.S.; Meshalkin, A.Yu. Superimposed equally oriented diffraction gratings formed in As₂S₃ films. Chalcogenide Lett. 2020, 17(1), 25—31 (IF: 0,977).
• Zalamai, V.V.; Tiron, A.V.; Iovu, M.S.; Syrbu, N.N. Optical Activity in Mn Doped As₂S₃ Glasses. În: IFMBE Proceedings, V. 77, Springer, 2020, p. 79—82. Doi: 10.1007/978-3-030-31866-6_17.
• Verlan, V.I.; Culeac, I.P.; Bordian, O.; Zubareva, V.E.; Bulhac, I.; Iovu, M.S.; Enachescu, M.; Siminel, N.A.; Nedelea, V.V. Luminescence Properties of a Novel Eu³⁺ Dinuclear Coordination Compound. În: IFMBE Proceedings, V. 77, Springer, 2020, p. 161—165. Doi: 10.1007/978-3-030-31866-6_33.
• Kanarovskii, E.Yu.; Yaltychenko, O.V.; Gorinchoy, N.N. Theoretical Model of Lipid Peroxidation Kinetics for Complexes of Cytochrome c and Cardiolipin with Participation of Antioxidants. În: IFMBE Proceedings, V. 77, Springer, 2020, p. 561—563. Doi: 10.1007/978-3-030-31866-6_100.
• Kanarovskii, E.Yu.; Yaltychenko, O.V. Influence of Polarization on Electron Localization in the Coated Tetramer Nanoclusters Used as Elements of Biorecognition Systems. În: IFMBE Proceedings, V. 77, Springer, 2020, p. 573—577. Doi: 10.1007/978-3-030-31866-6_102.

Brevete de invenție/Patents

• Zubareva, V.; Bulhac, I.; Bordian, O.; Verlan, V.; Culeac, I.; Enachescu, M.; Moise, C.C. Compus coordinativ dinuclear al europiului(III) cu liganzi micști, care manifestă proprietăți luminescente. Brevet de Invenție nr. MD 4677 B1 2020.02.29.

2019

• Sinyavskii, E.P.; Kostyukevich, N.S. Influence of Electric and Magnetic Fields on Interband Luminescence in Semiconductor Quantum Wires. Opt Spectrosc. 2019, 127(5), 901—906. Doi 10.1134/S0030400X19110249 (IF: 0,801).
• Nastas, A. Stability of Thin-Film Cu–As₂S₃ and Ag–As₂S₃ Structures. Tech Phys. 2019, 64(8), 1254—1258. Doi: 10.1134/S1063784219080152 (IF: 0,707).
• Syrbu, N.; Zalamai, V.; Culeac, I.; Iovu, M.; Tiron, A.V.; Beril, S.I.; Stamov, I.G. Optical activity induced by rare-earth ions in As₂S₃ glasses and KCl crystals. Opt Laser Technol. 2019, 114, 216—223. Doi: 10.1016/j.optlastec.2019.02.008 (IF: 2,503).

Brevete de invenție/Patents

• Culeac, I.; Enăchescu, M.; Borsciov, V.; Verlan, V.; Cojocaru, I.; Iovu, M.; Jderu, A.-A.; Dorobanțu, D. Sistem de semnalizare cu fibră optică și procedeu de localizare a intervenției neautorizate cu ajutorul acestuia. Brevet de Invenție nr. MD 1308 Z 219.08.31.
• Nastas, A. Procedeu de înregistrare a hologramelor optice și a imaginilor raster. Brevet de Invenție nr. MD 1262 Z 2019.01.31.

2018

• Iaseniuc, O.V.; Iovu, M.S.; Ghiulnare, A.; Mesterca, R.; Jderu, A.; Enachescu, M. Micro-Raman spectra of Ge–As–Se chalcogenide amorphous powders. Mold J Phys Sci. 2018, 17(3-4), 161—166.
• Bordian, O. Eu³⁺ photoluminescence in mononuclear coordination compounds with different ligands. Mold J Phys Sci. 2018, 17(3-4), 167—176.
• Iaseniuc, O.V.; Iovu, M.S.; Ghiulnare, A.; Mesterca, R.; Jderu, A.; Enachescu, M. Micro-Raman spectra of the amorphous Ge_xAs_xSe_1-2x chalcogenide glasses. În: Proc. SPIE 10977, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IX (31 December 2018). ATOM-N 2018. The 9th edition of the International Conference “Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies”, 23 – 26 August 2018, Constanta, Romania, p. 109770K-1—109770K-6. Doi: 10.1117/12.2323655.
• Bordian, O.; Verlan, V.; Culeac, I.; Iovu, M.; Bulhac, I., Zubarev, V. Synthesis, absorption and photoluminescence properties of the new coordination compound Eu(DBM)₃(Ph₃PO)₁H₂O. În: Proc. SPIE 10977, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IX (31 December 2018). ATOM-N 2018.  The 9th edition of the International Conference “Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies”, 23 – 26 August 2018, Constanta, Romania, p. 109771E-1—109771E-7 . Doi: 10.1117/12.2323761.
• Iaseniuc, O.V.; Iovu, M.S.; Ghiulnare, A.; Mesterca, R.; Jderu, A.; Enachescu, M. Micro-raman spectra of bulk Ge_xAs_xSe_1-2x chalcogenide glasses. P Romanian Acad A. 2018, 19(4), 545—550 (IF: 1,752).
• Iovu, M.S.; Iaseniuc, O.V. Stationary and transient photocurrents in some amorphous Ge-As-Se thin films. Optoelectron Adv Mat – RC. 2018, 12(9-10), 563—567 (IF: 0,386).
• Iovu, M.S.; Sergeev, S.A.; Iaseniuc, O.V. Electron-beam recording of the diffraction gratings in the (As₄S₃Se₃)_1-xSn_x amorphous thin films. Optoelectron Adv Mat – RC. 2018, 12(7-8), 377—380 (IF: 0,47).
• Baschir, L.; Opran, C.; Savastru, D.; Miclos, S.; Iovu, M.S.; Popescu, A.A. Ellipsometric investigations of a-As₂S₃ thin films obtained by RF magnetron sputtering. Chalcogenide Lett. 2018, 15(4), 199—205 (IF: 0,732).
• Stafe, M.; Popescu, A.A.; Savastru, D.; Negutu, C.; Vasile, G.; Mihailescu, M.; Ducariu, A.; Savu, V.; Tenciu, D.; Miclos, S.; Baschir, L.; Verlan, V.V.; Bordian, O.; Puscas, N.N. Optical hysteresis in SPR structures with amorphous As₂S₃ film under low-power laser irradiation. J Phys D Appl Phys. 2018, 51(12), 125106-1—125106-9. Doi: 10.1088/1361-6463/aaa9cf (IF: 2,588).

2017

• Канаровский, Е.Ю.; Ялтыченко, О.В.; Горинчой, Н.Н. Кинетика антиоксидантной активности α-токоферола и некоторых его гомологов. Часть 1. Обзор проблемы. Теоретическая модель. Электронная обработка материалов. 2017, 53(5), 48—66. ISSN 0013-5739.
• Iaseniuc, O.; Iovu, M. Steady-State and Transient Photoconductivity of Amorphous (As₄S₃Se₃)_1-xSn_x Thin Films.Rom J Phys. 2017, 62(9-10), 609. ISSN 1221-146X (IF: 1,758).
• Nastas, A.M.; Iovu, M.S.;Prisakar, A.M.; Tridukh, G.M. Effect of Corona Discharge on Formation of Holographic Diffraction Gratings in the Cu–As₂Se₃ Thin-Film Structure. Tech Phys. 2017, 62(9), 1403—1406.  Doi: 10.1134/S1063784217090195 (IF: 0,569).
• Yaltychenko, O.V.; Kanarovskii, E.Yu. Nonlinear dynamics of electron localization in four-center linear and cyclic type clusters in an external electric field. Surf Eng Appl Elect. 2018, 53(3), 250—257. Doi: 10.3103/S1068375517030152.
•  Iaseniuc, O.; Iovu, M. Steady-state photoconductivity of amorphous (As₄S₃Se₃)_1-XSn_X and Ge_XAs_XSe_1-2X thin films. Rom Rep Phys. 2017, 69(3), 505-1—505-11. ISSN 1221-1451 (IF: 1,367).
• Sinyavskii, E.P.; Karapetyan, S.A.; Kostyukevich, N.S. The influence of resonance IR laser radiation on magnetoabsorption in quantum wires. Phys Solid State. 2017, 59(4), 780—783. Doi: 10.1134/S1063783417040278 (IF: 0,831).

• Bordian, O.; Verlan, V.; Culeac, I.; Iovu, M.; Zubareva, V. Photoluminescente properties of Eu(o-MBA)₃Phen organic compound embedded in PEPC polymer matrix. J Optoelectron Adv M. 2017, 19(3-4), 223—227. ISSN 1454-4164 (IF: 0,383).
• Laikhtman, A.; Harea, D.; Axelevitch, A.; Meshalkin, A. Photodarkening effect and optical properties of a nanocomposite material polymer/Fe₃O₄ magnetic nanoparticles. În: Proc. SPIE 10036. Fourth Conference on Sensors, MEMS, and Electro-Optic Systems, Monuko du Plessis, Skukuza, Kruger National Park, South Africa, September 12, 2016, p. 100360U. Doi: 10.1117/12.2245773.

Ongoing projects

Local projects:

1. ANCD 20.80009.5007.14 (2020 – 2023) Multifunctional hybrid nanocomposites of different architecture from polymers and non- crystalline semiconductors for applications in optoelectronics,photonics and biomedicine, head – Mihail Iovu, Dr.Sci., prof.

Bilateral projects:

1. ANCD 22.80013.5007.6BL (2022 – 2023) Nanocomposite materials containing rare earth complexes for use in optoelectronics and solar energy, head – Victor Verlan, Ph.D.

Past projects

Local projects:

1. CSSDT/ANCD/MECC 15.817.02.03A (2015 – 2019) Elaboration of new nanostructured optical materials from composites based on polimers-inorganic semiconductors with practical applications, head – Mihail Iovu, Dr.Sci.
2. CSSDT 14.819.02.20A (2014 – 2015) Complex and superimposed diffraction gratings formation on photo- and electron-sensitive films of (As₄S₃Se₃)_{1- x}:Sn_x, head – Diana Shepel, Ph.D.
3. CSSDT 16.80012.50.22A (2017 – 2018) Optical diffractive elements for protection products of national economy, head – Oxana Iaseniuc, Ph.D.

Bilateral projects:

1. ANCD 19.80013.50.07.05A/BL (2019 – 2020) Technology method of fabrication of holographic diffractive optical elements in thin-film structures of metal-chalcogenide glass semiconductor, head – Andrian Nastas, Ph.D.
2. CSSDT-STCU 6117 (2016 – 2018) Nanocomposite Polymer/Organic Compounds with Rare Earth Ions for Photovoltaic Applications, head – Ph.D. Victor Verlan
3. CSSDT/ANCD-STCU 6219 (2017 – 2019) Optical and Magnetic Molecular Switches: Prospects for Practical Applications, head – Sofia Klokishner, prof.