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Browsing Articole ştiinţifice by Author "ADELUNG, R."

Browsing Articole ştiinţifice by Author "ADELUNG, R."

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  • Characterization of core/shell structures based on CdTe and GaAs nanocrystalline layers deposited on SnO2 microwires 
    GHIMPU, L.; URSAKI, V. V.; PANTAZI, A.; MESTERCA, R.; BRÂNCOVEANU, O.; SHREE, Sindu; ADELUNG, R.; TIGINYANU, I. M.; ENACHESCU, M. (ELSEVIER, 2018)
    We report the fabrication and characterization of SnO2/CdTe and SnO2/GaAs core/shell microstructures. CdTe or GaAs shell layers were deposited by radio-frequency (RF) magnetron sputtering on core SnO2 microwires synthesized ...
  • Control of persistent photoconductivity in nanostructured InP through morphology design 
    MONAICO, Ed.; POSTOLACHE, V.; BORODIN, E.; URSAKI, V. V.; LUPAN, O.; ADELUNG, R.; NIELSCH, K.; TIGINYANU, I. M. (IOP Publishing Ltd, 2015)
    In this paper, we show that long-duration-photoconductivity decay (LDPCD) and persistent photoconductivity (PPC) in porous InP structures fabricated by anodic etching of bulk substrates can be controlled through the ...
  • Detection properties of individual and networked CNT-ZnO-hybrid tetrapods 
    POSTICA, V.; LUPAN, O.; SONTEA, V.; TROFIM, V.; SCHÜTT, F.; SMAZNA, D.; MISHRA, Y. K.; ADELUNG, R. (IEEE, 2017)
    In this work, the UV detection properties of ZnO tetrapod (ZnO-T) networks functionalized with carbon nanotubes (CNTs), as well as for individual ZnO-T-CNT are reported. The ZnO-T networks were fabricated via a flame ...
  • Detectors based on Pd-doped and PdO-functionalized ZnO nanostructures 
    POSTICA, V.; LUPAN, O.; ABABII, N.; HOPPE, M.; ADELUNG, R.; CHOW, L.; SONTEA, V.; ASCHEHOUG, P.; VIANA, B.; PAUPORTÉ, Th. (SPIE, 2018)
    In this work, zinc oxide (ZnO) nanostructured films were grown using a simple synthesis from chemical solutions (SCS) approach from aqueous baths at relatively low temperatures (< 95 °C). The samples were doped with Pd ...
  • Ethanol Sensing Performances of Zinc-doped Copper Oxide Nano-crystallite Layers 
    CRETU, V.; POSTICA, V.; ABABII, N.; SCHÜTT, F.; HOPPE, M.; SMAZNA, D.; TROFIM, V.; SONTEA, V.; ADELUNG, R.; LUPAN, O. (Sumy State University, 2015)
    The synthesis via chemical solutions (aqueous) (SCS) wet route is a low-temperature and cost-effective growth technique of high crystalline quality oxide semiconductors films. Here we report on morphology, chemical ...
  • H2 gas sensing properties of a ZnO/CuO and ZnO/CuO/Cu2O Heterostructures 
    ABABII, N.; POSTICA, V.; HOPPE, M.; ADELUNG, R.; LUPAN, O.; RAILEAN, S.; PAUPORTÉ, T.; VIANA, B. (Society of Photo-Optical Instrumentation Engineers, SPIE, 2017)
    The most important parameters of gas sensors are sensitivity and especially high selectivity to specific chemical species. To improve these parameters we developed sensor structures based on layered semiconducting oxides, ...
  • Hybridization of Zinc Oxide Tetrapods for Selective Gas Sensing Applications 
    LUPAN, O.; POSTICA, V.; GRÖTTRUP, J.; MISHRA, A. K.; DE LEEUW, N. H.; CARREIRA, J. F. C.; RODRIGUES, J.; BEN SEDRINE, N.; CORREIA, M. R.; MONTEIRO, T.; CRETU, V.; TIGINYANU, I.; SMAZNA, D.; MISHRA, Y. K.; ADELUNG, R. (American Chemical Society, 2017)
    In this work, the exceptionally improved sensing capability of highly porous three-dimensional (3-D) hybrid ceramic networks toward reducing gases is demonstrated for the first time. The 3-D hybrid ceramic networks are ...
  • The impact of O2/Ar ratio on morphology and functional properties in reactive sputtering of metal oxide thin films 
    VAHL, A.; DITTMANN, J.; JETTER, J.; VEZIROGLU, S.; SHREE, S.; ABABII, N.; LUPAN, O.; AKTAS, O. C.; STRUNSKUS, T.; QUANDT, E.; ADELUNG, R.; SHARMA, S. K.; FAUPEL, F. (IOP Publishing Ltd, 2019)
    Morphology is a critical parameter for various thin film applications, influencing properties like wetting, catalytic performance and sensing efficiency. In this work, we report on the impact of oxygen partial flow on the ...
  • The Impact of the Discreteness of Low-fluence Ion Beam Processing on the Spatial Architecture of GaN Nanostructures Fabricated by Surface Charge Lithography 
    TIGINYANU, I. M.; VOLCIUC, O.; STEVENS-KALCEFF, M. A.; POPA, V.; GUTOWSKI, J.; WILLE, S.; ADELUNG, R.; FOLL, H. (Academia de Ştiinţe a Moldovei, 2013)
    We show that the descrete nature of ion beam processing used as a component in the approach of surface charge lithography leads to spatial modulation of the edges of the GaN nanostructures such as nanobelts and nanoperforated ...
  • Individual Bi2O3-Functionalized ZnO Microwire for Hydrogen Gas Detection 
    POSTICA, V.; LUPAN, O.; GRÖTTRUP, J.; ADELUNG, R. (Springer Nature Switzerland, 2018)
    Individual micro- and nanostructures of metal oxides are known to be highly sensitive to surface phenomena due to their enhanced surface-to-volume ratio. In this work, an individual Bi2O3-functionalized ZnO microwire ...
  • Influence of CuO nanostructures morphology on hydrogen gas sensing performances 
    LUPAN, O.; POSTICA, V.; ABABII, N.; HOPPE, M.; CRETU, V.; TIGINYANU, I.; SONTEA, V.; PAUPORTÉ, Th.; VIANA, B.; ADELUNG, R. (ELSEVIER, 2016)
    In this study, the impact of different morphologies of p-type copper oxide nanostructures on hydrogen gas response is investigated. Sensor structures based on CuO nanowire (NW) networks demonstrated much higher gas response ...
  • Investigation of optical properties and electronic transitions in bulk and nano-microribbons of molybdenum trioxide 
    LUPAN, O; TROFIM, V.; CRETU, V.; STAMOV, I.; SYRBU, N. N.; TIGINYANU, I.; MISHRA, Y. K.; ADELUNG, R. (IOP Publishing, 2014)
    In this work, we report on crystalline quality and optical characteristics of molybdenum trioxide (MoO3) bulk and nano-microribbons grown by rapid thermal oxidation (RTO). The developed RTO procedure allows one to synthesize ...
  • Low powered, tunable and ultra-light aerographite sensor for climate relevant gas monitoring 
    LUPAN, O.; POSTICA, V.; MECKLENBURG, M.; SCHULTE, K.; MISHRA, Y. K.; FIEDLER, B.; ADELUNG, R. (The Royal Society of Chemistry, 2016)
    Increasing atmospheric CO2 gas pollution and emergence of new types of green energy sources require continuous environmental monitoring. In this context, fast, efficient, light, robust, and reliable gas sensors that can ...
  • Low temperature preparation of Ag-doped ZnO nanowire arrays for sensor and light-emitting diode applications 
    LUPAN, O.; VIANA, B.; CRETU, V.; POSTICA, V.; ADELUNG, R.; PAUPORTÉ, T. (SPIE, Society of Photo-Optical Instrumentation Engineers, 2016)
    Transition metal doped-oxide semiconductor nanostructures are important to achieve enhanced and new properties for advanced applications. We describe the low temperature preparation of ZnO:Ag nanowire/nanorod (NW/NR) arrays ...
  • Magnetron Sputtering and Characterization of Doped Zinc Oxide Nanofibrous Films and Their Applications 
    LUPAN, O.; GHIMPU, L.; REIMER, T.; HOPPE, M.; PAULOWICZ, I.; GEDAMU, D.; MISHRA, Y. K.; HAMMERICH, D.; CHEMNITZ, S.; CRETU, V.; TIGINYANU, I.; ADELUNG, R. (American Scientific Publishers, 2014)
    We report on the role played by different types of dopants, namely, Tin and Aluminum on the properties of zinc oxide nanofibrous films prepared by RF magnetron sputtering on substrates in pure Argon atmosphere. The influence ...
  • Morphology dependent UV photoresponse of Sn-doped ZnO microstructures 
    POSTICA, V.; HOPPE, M.; GRÖTTRUP, J.; HAYES, P.; RÖBISCH, V.; SMAZNA, D.; ADELUNG, R.; VIANA, B.; ASCHEHOUG, P.; PAUPORTÉ, T.; LUPAN, O. (ELSEVIER, 2017)
    In this work, the UV sensing properties of Sn-doped and/or alloyed zinc oxide (ZnO) microstructures with different morphologies were investigated in order to elaborate the high performance UV photodetectors. We have compared ...
  • Plasma based nanoparticle synthesis: from preparation to function 
    POLONSKYI, Oleksandr; VAHL, A.; DREWES, J.; HINZ, A.; STRUNSKUS, T.; ABABII, N.; REIMER, T.; CHEMNITZ, S.; LUPAN, O.; ADELUNG, R.; FAUPEL, F. (Sumy State University, 2018)
    In this paper, we report on a recent progress in formation and deposition of NPs by the gas aggregation method. Examples range from noble (Au, Ag), through reactive (Al) to more advanced core-shell nanostructures [4]. The ...
  • Properties of ZnO:Fe nanostructured films grown by successive chemical synthesis 
    POSTICA, V.; HOPPE, M.; ABABII, N.; TROFIM, V.; RAILEAN, S.; ADELUNG, R.; LUPAN, O. (Institute of Electrical and Electronics Engineerings, IEEE, 2016)
    Rapid progress of nanotechnology in recent years and continuous minimization of portable devices created the necessity of multifunctional devices elaboration. In this work, the morphological, structural and sensing properties ...
  • A rapid hydrothermal synthesis of rutile SnO2 nanowires 
    CRETU, V.; POSTICA, V.; MISHRA, A. K.; HOPPE, M.; TIGINYANU, I.; MISHRA, Y. K.; CHOW, L.; DE LEEUW, Nora H.; ADELUNG, R.; LUPAN, O. (The Royal Society of Chemistry, 2016)
    Synthesis, characterization and DFT studies of zincdoped copper oxide nanocrystals for gas sensing applications Due to their unique properties, p-type copper oxide nanostructures have demonstrated promising potential for ...
  • Sensing performance of CuO/Cu2O/ZnO:Fe heterostructure coated with thermally stable ultrathin hydrophobic PV3D3 polymer layer for battery application 
    SCHRÖDER, S.; ABABII, N.; LUPAN, O.; DREWES, J.; MAGARIU, N.; KRÜGER, H.; STRUNSKUS, T.; ADELUNG, R.; HANSEN, S.; FAUPEL, F. (Elsevier, 2022)
    This study reports on a new type of moisture protected gas sensor, which is capable to solve this problem. Sensitive nano-materials of CuO/Cu2O/ZnO:Fe heterostructures are grown and subsequently coated with an ultrathin ...

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