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Browsing Conferinţa "Amorphous and Nanostructured Chalcogenides" by Title

Browsing Conferinţa "Amorphous and Nanostructured Chalcogenides" by Title

Now showing items 24-43 of 67

Imaging complex superimposed gratings by digital holographic microscopy

CAZAC, V. (Tehnica UTM, 2019)

This paper concerns holographic gratings recording on chalcogenide nanomultilayers (NML) of the composition As2S3–Se. Photosensitive NML of As2S3–Se and constituents films of As2S3, Se were prepared by a computer controlled ...
In memoriam of academician Andrei ANDRIESH the founder of non-crystalline semiconductor school in Republic of Moldova

POPESCU, M.; TSIULYANU, D.; IOVU, M. (Tehnica UTM, 2019)

Just over 85 years have passed since the birth of academician Andrei ANDRIESH, gone into eternity. He was born (October 24, 1933) and educated in Chisinau the capital of the present Republic of Moldova.
Influence of Ag, Sb or Ge doping on short-range order of As-S chalcogenide glasses

REVUTSKA, L.; STRONSKI, A.; SHPORTKO, K.; PAIUK, O.; GUDYMENKO, O.; GUBANOVA, A. (Tehnica UTM, 2019)

In this work X-ray diffraction (XRD) technique is employed to investigate the structural properties amorphous As-S-Sb, As-S-Ag and As-S-Ge chalcogenide glasses. The aim of this study is to perform analysis of parameters ...
Influence of corona discharge on photoinduced modification of optical characteristic of Cu–As2Se3 thin film srructures

NASTAS, A.M.; IOVU, M.S. (Tehnica UTM, 2019)

It was established [1], that application of negative corona discharge during recording of optical holographic diffraction gratings in Cu-As2Se3 thin film structures, in comparison of positive corona discharge, increase the ...
Influence of glassy backbone on the photoformation and properties of solid electrolytes Ag: As-S-Ge

TSIULYANU, D.; STRATAN, I.; CIOBANU, M. (Tehnica UTM, 2019)

The work is conducted to clarify the effect of the glassy backbone on the process of fabrication and some properties of solid electrolytes obtained via photodissolution (PD) of Ag. For this purpose the ternary chalcogenide ...
Influence of soft and rigid low frequency vibrations of AsnSm chains and rings in g-As2S3 on the low temperature anomalies

MITSA, V.; FEHER, A.; TKÁČ, V.; HOLOMB, R.; VERES, M. (Tehnica UTM, 2019)

The study of the g-As2S3 thermal conductivity k (T) revealed the temperature hysteresis at low temperature in the temperature range between 11 and 60 K with cooling and heating rates, v1 = 6.4 × 10-3K/s and v2 = 6.9 × 10-3 ...
Influence of the phase state of Ge2Sb2Te5 thin cover on the parameters of the optical waveguide structures

KOVALUYK, V.; LAZARENKO, P.; KOZYUKHIN, S.; AN, P.; PROKHODTSOV, A.; GOLTSMAN, G.; SHERCHENKOV, A. (Tehnica UTM, 2019)

The fast switching time of Ge-Sb-Te thin films between amorphous and crystalline states initiated by laser beam as well as significant change of their optical properties and the preservation of metastable states for tens ...
Interaction of chalcogenide glass/Ag dual films structures with e-beam and evaluation of the occurring effects on the performance of CBRAM devices

MITKOVA, M. (Tehnica UTM, 2019)

Among the many applications of chalcogenide glasses, their involvement as an active layer in redox-conductive-bridge-memory (CBRAM) devices triggers particular interest because of their potential to replace CMOS-based NAND ...
Laser induced shanges of structure and optical properties of As-Sb-S amorphous films

DURKOT, M. O.; KRYUCHYN, A. A.; MAKAR, L. I.; MYKAYLO, O. A.; PETROV, V. V.; POP, M. M.; RUBISH, V. M.; YASINKO, T. I.; HOLOMB, R. M.; KOSTIUKEVICH, S. O. (Tehnica UTM, 2019)

The report is devoted to the studies of laser irradiation and annealing influence on the optical characteristics and Raman spectra of As40-xSbxS60 (0 x 12) amorphous films prepared by the thermal evaporation of glasses ...
Laser-induced periodic surface structures (LIPSS) of amorphous GST225 thin films upon femtosecond laser irradiation

KOZYUKHIN, S.; LAZARENKO, P.; SMAYEV, M.; VOROBYOV, Yu.; GLUKHENKAYA, V.; SYBINA, Yu.; SIGAEV, V. (Tehnica UTM, 2019)

Ultrashort laser irradiation is proven as an alternative to lithography for nanostructuring surfaces of various materials via formation of laser-induced periodic surface structures (LIPSS) or ripples. In this work, our ...
Light- and voltage-controlled capacity of Cu-As2S3-Cu thin film cells for photodetection

GANEA, P.; LORINCZI, A.; SOCOL, G.; ZAMFIRA, S.; MATEI, E.; CREȚU, N.; POPESCU, M.; SAVA, F. (Tehnica UTM, 2019)

Amorphous As2S3 thin films have remarkable electrical and optical properties, which make them solid candidates for a variety of applications and keep up the scientific interest to study them, even after decades from the ...
Mass transport effect and surface relief formation in AsxS100-x nanolayers

KONDRAT, O.; HOLOMB, R.; CSIK, A.; VERES, M.; MITSA, V. (Tehnica UTM, 2019)

Unique structural, electronic and optical properties have determined many various applications of chalcogenide glassy (ChG) materials. The large refractive indices and third-order optical nonlinearities of the chalcogenide ...
Micro and nanostructuring of chalcogenide glasses

VLCEK, M.; PALKA, K.; SLANG, S.; LOGHINA, L.; IAKOVLEVA, A. (Tehnica UTM, 2019)

Chalcogenide glasses, non-oxide glasses based on one or more chalcogen element (S, Se, Te), usually alloyed with more electropositive network-forming elements such as As, Ge or others posses many unique properties which ...
Multiple switching effects in GeSbTe thin-films

FEFELOV, S.; KAZAKOVA, L.; BOGOSLOVSKIY, N.; LAZARENKO, P. (Tehnica UTM, 2019)

The switching and memory effects in chalcogenide glassy semiconductors are actively studied both experimentally and theoretically during the last years. Possible mechanisms of these effects are widely discussed. In this ...
Nano crystallized chalcogenide for photovoltaic applications

ZHANG, X.; CATHELINAUD, M.; LIANG, G.; CHEN, S.; DONGLOU, R.; MA, H.; CALVEZ, L. (Tehnica UTM, 2019)

Sb2Se3 is a non-toxic and earth abundant compound and has been extensively studied for a wide range of applications including solar energy conversion. This compound with an orthorhombic structure has an inherent anisotropic ...
Nano-structure formation in ternary chalcogenide thin films

IASENIUC, O.V.; IOVU, M.S. (Tehnica UTM, 2019)

Thin films of As-S-Se-Sn and As-Se-Ge chalcogenide semiconductors of different composition have been used for direct e-beam recording of diffraction grating structures by SEM, EBL, and holography techniques. As a result ...
Nanocrystalline and amorphous tellurium films for gas sensing applications

TSIULYANU, D.; MOCREAC, O.; AFANASIEV, A. (Tehnica UTM, 2019)

Microstructural peculiarities and gas (NO2) sensing properties of tellurium thin films dependent on the technological procedures of their physical grow are presented. The fabrication of the films was provided using thermal ...
Nonvolatile resistance switching in monolayer transition metal dichalcogenides: an explanation

SAVA, F.; VELEA, A.; MIHAI, C. O.; BURUIANA, A. T. (Tehnica UTM, 2019)

Recently, Ge et. al. [1] showed that in atomic sheets of transition metal (from the group VI B) dichalcogenides (TMD) (Fig. 1) (MoS2, MoSe2, WS2 and WSe2) nonvolatile resistance switching occurs. In order to understand ...
The optical and energy parameters of As40Se60, As40Se30Te30, As40Se30S30 chalcogenide glasses

ISAYEV, A. I.; MEKHTIYEVA, S. I.; ALEKBEROV, R. I. (Tehnica UTM, 2019)

The chalcogenide vitreous semiconductors (CVS) are characterized by unique physical properties, has received special attention in connection with the broad forecast for using these materials in photolithography, holography, ...
Optical properties of binary and ternary chalcogenides

GALCA, A.-C.; SAVA, F.; SIMANDAN, I.-D.; SOCOL, G.; VELEA, A. (Tehnica UTM, 2019)

Development of memories based on novel chalcogenide materials are among the research directions of many research units aiming discovery of new or improved optical or electric storage media.

Browsing Conferinţa "Amorphous and Nanostructured Chalcogenides" by Title

Browsing Conferinţa "Amorphous and Nanostructured Chalcogenides" by Title

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