Search Results - "Scalvi, Luis V.A."

Analysis of thin Film Deposition and Defects Influence on Quinoline Derivative-Titanium Dioxide Heterostructure for Potential p-n Junction in Optoelectronic Devices by Oliveira, Natália C., Fonseca, Lucas P., Scalvi, Luis V.A.

“…Titanium dioxide (TiO2) is an n-type oxide semiconductor, where the electron donors are usually associated with oxygen vacancies and interstitial titanium…”
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Thin film deposition of organic-inorganic quinoline-tin dioxide p-n junction for optoelectronic devices by Fonseca, Lucas P., Oliveira, Natália C., Martins, Lucas M., Scalvi, Luis V.A.

“…Tin dioxide (SnO2) is an oxide semiconductor with n-type characteristics, with high transparency in the UV–Vis, where the donors are usually associated with…”
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Deposition of hybrid structures of reduced graphene oxide and tin dioxide thin films, and persistent photoconductivity observation by de Oliveira, Letícia da S., Fonseca, Lucas P., de Souza, Renato D., Bueno, Cristina de F., Martins, Lucas M., Scalvi, Luis V.A.

“…Reduced graphene oxide (rGO) is deposited on glass substrate by dripping and sol-gel-coating methods giving rise to nanostructures. When in combination with…”
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Effect of thermal annealing on kaolin from the Amazon region, aiming at the production of geopolymer by Maruoka, Luz M.A., Pinheiro, Isnailson F., Freitas, Hilderson S., Nobre, Francisco X., Scalvi, Luis V.A.

“…In the focus of environmental problems and climate change, research for alternative materials becomes essential. In this sense, research on geopolymers is very…”
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Rectifying behavior of the GaAs / Er-doped SnO2 heterostructure: Interface dipole role and monochromatic light influence by Russo, Fabricio T., Scalvi, Luis V.A.

“…The characteristic current-voltage (I x V) curves are measured across the interface of a GaAs/SnO2 heterostructure, where the top layer (tin dioxide) is doped…”
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Dipole behavior in thin film heterostructure composed of Er-doped SnO2 and GaAs: Influence of polarization bias, temperature and stray light by Russo, Fabricio T., Machado, Diego H.O., Scalvi, Luis V.A.

“…The heterostructure system GaAs/SnO2 is built by resistive evaporation of Er-doped SnO2 powder on the top of GaAs semi-insulating substrate. The SnO2 powder…”
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On the photo-induced electrical conduction related to gas sensing of the Sb:SnO2/TiO2 heterostructure by Ramos, Roberto A., Boratto, Miguel H., Scalvi, Luis V.A.

“…•TiO2/Sb:SnO2 shows improvement on gas-sensing compared to sole TiO2.•Investigation of gas sensor properties at different atmospheres and…”
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Memristive behavior of the SnO2/TiO2 interface deposited by sol–gel by Boratto, Miguel H., Ramos, Roberto A., Congiu, Mirko, Graeff, Carlos F.O., Scalvi, Luis V.A.

“…[Display omitted] •A novel and cheap RRAM based on SnO2/TiO2 deposited by sol–gel is presented.•Switching mechanism on SnO2/TiO2 interface is mainly driven by…”
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Annealing temperature influence on sol-gel processed zirconium oxide thin films for electronic applications by Boratto, Miguel H., Congiu, Mirko, dos Santos, Stevan B.O., Scalvi, Luis V.A.

“…A study of zirconium oxide (ZrO2) thin films obtained by the non-alkoxide sol-gel method at different annealing temperatures, up to 450 °C, is presented…”
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Influence of thermal annealing on the properties of evaporated Er-doped SnO2 by Machado, Diego H.O., da Silva, José H.D., Tabata, Américo, Scalvi, Luis V.A.

“…[Display omitted] •Combination of SnO2 powder obtained by sol gel and resistively evaporated thin film.•Films can be deposited on hydrophobic surfaces.•PL of…”
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Influence of Pb2+ doping in the optical and electro-optical properties of SnO2 thin films by dos Santos, Stevan B.O., Boratto, Miguel H., Ramos, Roberto A., Scalvi, Luis V.A.

“…Different types of doping incorporated to tin dioxide (SnO2) have been reported in order to control its bandgap aiming optoelectronic applications, such as…”
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Anatase–Rutile Transition and Photo-Induced Conductivity of Highly Yb-Doped TiO2 Films Deposited by Acid Sol–Gel Dip-Coating Method by Kaezmarek Pedrini, Luiz F., Santos, Stevan B. O., Trino, Luciana D., Scalvi, Luis V. A.

“…A method to prepare Yb-doped TiO 2 is proposed, using titanium isopropoxide and ytterbium oxide. Thin films and powders are produced through the sol–gel…”
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Investigation of sensing properties of sol–gel processed 4 at%Sb:SnO2/TiO2 thin films by Boratto, Miguel H., Ramos, Roberto A., Scalvi, Luis V. A.

“…In this work we investigate the gas and photo sensing properties of the antimony doped tin oxide and titanium oxide (4 at%Sb:SnO 2 /TiO 2 ) nanocrystalline…”
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Low-temperature ZrO2 thin films obtained by polymeric route for electronic applications by Boratto, Miguel H., Lima, João V. M., Scalvi, Luis V. A., Graeff, Carlos F. O.

“…In this work, zirconium oxide (ZrO 2 ) films obtained by the polymer-assisted chemical solution method were evaluated. Thin films are obtained using…”
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Ambipolar transport in tin dioxide thin film transistors promoted by PCBM fullerene by Boratto, Miguel H., Scalvi, Luis V. A., Goncharova, Lyudmila V., Fanchini, Giovanni

“…In this article, the effect of phenyl-C 61 -butyric acid methyl ester (PCBM) layer on the electrical performance of field-effect transistors (FETs) based on…”
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Photo-induced electrical behavior under gas adsorption on SnO2 -based heterostructures by Machado, Diego H.O., da Silva, José H.D., Russo, Fabrício T., Scalvi, Luis V.A.

“…Er-doped SnO2 thin films are produced by a combined technique where films are deposited by resistive evaporation from a precursor powder obtained by sol-gel…”
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Anomalous diode behavior of Cu2S/SnO2 p–n junction by Lima, João V. M., Santos, Stevan B. O., Silva, Rafael A., Boratto, Miguel H., Graeff, Carlos F. O., Scalvi, Luis V. A.

“…Cu-doped SnO 2 thin films present application as a gas sensor in H 2 S atmosphere, since the conductivity of SnO 2 is increased due to the transformation of Cu…”
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Deposition of TiO2 thin Films by Dip-Coating Technique from a Two-Phase Solution Method and Application to Photocatalysis by Pedrini, Luiz F. K., Escaliante, Lucas C., Scalvi, Luis V. A.

“…A derivation of the sol-gel-dip-coating deposition technique is proposed, where the precursor solution exhibits two separated liquid phases, reaching an…”
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Preparation of TiO2/SnO2 Thin Films by Sol–Gel Method and Periodic B3LYP Simulations by Floriano, Emerson A, Scalvi, Luis V. A, Saeki, Margarida J, Sambrano, Julio R

“…Titanium dioxide (TiO2) thin films are grown by the sol–gel dip-coating technique, in conjunction with SnO2 in the form of a heterostructure. It was found that…”
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Improved electrical transport in lightly Er-doped sol–gel spin-coating SnO2 thin films, processed by photolithography by Ravaro, Leandro P., Scalvi, Luis V. A., Boratto, Miguel H.

“…Sol–gel spin-coating SnO 2 thin films were deposited and processed through positive photolithography (liftoff), avoiding surface interaction with gaseous…”
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