Browsing by Subject "ZnO"

DETECTAREA LUMINII UV PE BAZA REȚELELOR DE ZnO

Nagpal, Rajat; Lupan, Cristian; Sandu, Iulia; Bîrnaz, Adrian (CEP USM, 2024)

ZnO network is considered as a good visible blind UV light detector. In this study we report room temperature UV detection analysis at three different wavelengths spread in UV-A and UV-B regions. Studied ZnO network ...

EFFECTS OF IMPURITY BAND IN HEAVILY DOPED ZnO:HCl

Colibaba, Gleb; Avdonin, A.; Shtepliuk, I.; Caraman, Mihail; Domagała, J.; Inculeț, Ion (Elsevier, 2019)

A comparative study of properties of ZnO:HCl single crystals obtained by various methods is presented. Characterization by photoluminescence, optical and electrical measurements in the wide temperature range has allowed ...

GROWTH OF P-GAN ON SILICON SUBSTRATES WITH ZNO BUFFER LAYERS

Raevschi, Simion; Gorceac, Leonid; Botnariuc, Vasile; Branişte, Tudor (Springer Nature, 2020)

GaN layers on Silicon with ZnO intermediate layer were synthesized by using the HVPE (Hydride Vapor Phase Epitaxy) method. ZnO layers were deposited from solutions of zinc compounds in ethanol or water in two steps. At the ...

INFLUENȚA DOPĂRII CU ALUMINIU ASUPRA PROPRIETĂȚILOR OPTICE ALE STRATURILOR SUBȚIRI DE ZnO

Lungu, Ion (CEP USM, 2020)

Straturile nanostructurate ZnO au fost sintetizate din soluții chimice prin metoda pirolizei pulverizate. Prin analiza difracției cu raze X (XRD) și a spectroscopiei UV-Vi sau fost studiate efectele variației concentrației ...

LUMINESCENT PROPERTIES OF ZnO POWDERS SYNTHESIZED BY THE ISOVALENT SUBSTITUTION METHOD

Goglidze, Tatiana; Dementiev, Igor; Koval, Andrei; Nedeoglo, Natalia; Nedeoglo, Dmitrii (2016)

Zinc oxide powders have been prepared by the isovalent substitution method by means of high - temperature annealing of a zinc sulfide powder synthesized by a chemical method. Investigation of photoluminescence ...

PHOTOLUMINESCENCE STUDY OF ZnO NANOSTRUCTURES GROWN ON SILICON BY MOCVD

Sirkeli, Vadim; Nedeoglo, Dmitrii (Elsevier, 2012)

ZnO nanostructures with a size ranging from 20 to 100 nm were successfully deposited on (1 0 0)-Si substrates at different temperatures (500–800 °C) using MOCVD. It could be confirmed that the size of ZnO nanostructures ...

THE PHOTOPHYSICAL PROPERTIES OF Ga DOPED ZnO THIN FILMS GROWN BY SPRAY PYROLYSIS METHOD

Worasawat, Suchada; Taku, Miyake; Potlog, Tamara; Mimura, Hidenori (Springer Nature, 2020)

In this paper we report nanocrystalline ZnO thin films deposited by varying the Ga concentrations and atmosphere gas, onto the glass substrates using spray pyrolysis technique at 450 °C substrate temperature. After ...

PROPRIETATILE ELECTRONICE A SUPRAFETEI STRATURILOR DE CdS DEPUSE PE SUPORTURI DE ZnO ȘI SnO2

Rotaru, Corneliu (CEP USM, 2024)

Electronic properties of the CdS thin films deposited by Close-Spaced Sublimation have been investigated by Kelvin Probe (KP) and Photoelectron Yield Spectroscopy (PYS). The Fermi level position changes between 180 meV ...

PROPRIETĂȚILE FIZICE ALE STRATURILOR DE ZnO PREPARATE PE Si PRIN METODA HIDROTERMALĂ

Raevschi, Simion; Gorceac, Leonid; Botnariuc, Vasile; Braniște, Tudor; Vatavu, Sergiu (CEP USM, 2020)

Straturi subțiri, de nucleație și proprii, de ZnO au fost sintetizate pe Si prin metoda hidrotermală din soluțiile compușilor zincului folosindu-se solvenții: apă, apă + etanol, apă + metanol, apă + propanol, apă + ...

STRATURI NANOSTRUCTURATE DE ZnO DOPATE CU Al PENTRU FOTOELECTROZI ÎN STRUCTURILE HIBRIDE PE BAZA FTALOCIANINEI DE CUPRU

Furtună, Vadim; Duca, Dumitru; Potlog, Tamara (CEP USM, 2016)

În articol este prezentat un studiu al structurii şi proprietăţilor optice ale straturilor subţiri de ZnO dopate cu Al atât netratate termic, cât şi tratate termic în flux de hidrogen la 445 C, precum şi ...

ZnO FOR INFRARED AND TERAHERTZ APPLICATIONS

Sirkeli, Vadim; Hartnagel, Hans (Elsevier, 2021)

This chapter reviews the recent progress of the theoretical and experimental studies of ZnO-based structures such as quantum cascade lasers, resonant-tunneling diodes, and quantum well detectors and their applications for ...

ZnO-BASED TERAHERTZ QUANTUM CASCADE LASERS

Sirkeli, Vadim; Hartnagel, Hans (Elsevier, 2019)

High-power terahertz sources operating at room-temperature are promising for many applications such as explosive materials detection, non-invasive medical imaging, and high speed telecommunication. Here we report the results ...

ИЗЛУЧАТЕЛЬНЫЕ СВОЙСТВА ПОРОШКОВ ZnO:Ag, ПОЛУЧЕННЫХ ХИМИЧЕСКИМ ОСАЖДЕНИЕМ ИЗ ВОДНОГО РАСТВОРА

Гоглидзе, Татьяна; Гончаренко, Евгений; Дементьев, Игорь; Недеогло, Наталья; Юрьева, Татьяна; Недеогло, Дмитрий (CEP USM, 2020)

Browsing by Subject "ZnO"

Browsing by Subject "ZnO"

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