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Thin films of copper oxide nanostructured via rapid thermal processing

Show simple item record LUPAN, Cristian CREȚU, Vasilii MISHRA, Abhishek Kumar MAGARIU, Nicolae MANCIU, Nicolae ABABII, Nicolai MISHRA, Soni RAILEAN, Serghei ZIMOCH, Lukas GALSTYAN, Vardan HANSEN, Sandra PAUPORTÉ, Thierry 2023-01-18T07:47:43Z 2023-01-18T07:47:43Z 2022
dc.identifier.citation LUPAN, Cristian, CREȚU, Vasilii, MISHRA, Abhishek Kumar et al. Thin films of copper oxide nanostructured via rapid thermal processing. In: Journal of Engineering Science. 2022, V. 29, N. 4, pp. 84-96. ISSN 2587-3474, eISSN 2587-3482. en_US
dc.identifier.issn 2587-3474
dc.identifier.issn 2587-3482
dc.description.abstract Nanostructured copper oxide films were obtained by the method of chemical synthesis from solutions (SCS) and exposed to post-growth rapid thermal processing (RTP) in air at different temperatures to study the influence of annealing temperature on morphological, chemical, structural and sensing properties. Controlled modification of surface morphology, in the particular size of nanostructures, crystallinity and phase can be achieved by RTP, which is preferred due to saving of energy budget nowadays. Detailed physico-chemical analysis of the films was performed using the scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman and energy dispersive X-ray (EDX) techniques. Sensors based on the copper oxide nanostructured films after RTP for 30 s only were tested with 100 ppm hydrogen gas at an operating temperature range from 250 ºC to 350 ºC. The difference in the response to 100 ppm hydrogen gas of the sensors based on thermally processed films at different temperatures was determined. We also noted that the change in the response of the sensing structure is correlated with its surface morphology controlled by RTP regime with a short duration. A detection mechanism to hydrogen gas has been proposed as well. en_US
dc.description.abstract Peliculele de oxid de cupru nanostructurat au fost obținute prin metoda sintezei chimice în soluții (SCS) și expuse după depunere la tratament termic rapid (RTP) în aer la diferite temperaturi pentru a studia influența temperaturii tratamentului termic asupra proprietăților morfologice, chimice, structurale și senzoriale. Modificarea controlată a morfologiei suprafeței, în particular a dimensiunii nanostructurilor, cristalinității și fazei au fost obținute cu ajutorul RTP, care este preferat datorită necesității consumului de energie în prezent. Analiza fizico-chimică detaliată a peliculelor a fost realizată cu ajutorul microscopului electronic de baleiaj (SEM), difracție cu raze X (XRD), Raman și tehnici pe baza dispersiei razelor X (EDX). Senzorii pe baza peliculelor de oxid de cupru nanostructurat după RTP numai de 30 s au fost testate la 100 ppm hidrogen la temperaturi de operare între 250 °C și 350 °C. Diferența în răspuns la 100 ppm hidrogen a senzorilor bazați pe peliculele tratate termic rapid la diferite temperaturi au fost determinate. Noi am observat că modificarea în răspuns a structurilor senzoriale corelează cu morfologia suprafeței controlată de regimul RTP cu durată foarte mică. De asemenea, un mecanism de detecție a hidrogenului a fost propus și confirmat prin calculele DFT. en_US
dc.language.iso en en_US
dc.publisher Technical University of Moldova en_US
dc.relation.ispartofseries Journal of Engineering Science;2022, V. 29, N. 4
dc.rights Attribution-NonCommercial-NoDerivs 3.0 United States *
dc.rights.uri *
dc.subject copper oxide en_US
dc.subject nanostructures en_US
dc.subject thin films en_US
dc.subject rapid thermal processing en_US
dc.subject nanostructured films en_US
dc.subject copper oxide films en_US
dc.subject oxid de cupru en_US
dc.subject nanostructuri en_US
dc.subject pelicule de oxid de cupru en_US
dc.subject pelicule nanostructurate en_US
dc.subject tratament termic rapid en_US
dc.title Thin films of copper oxide nanostructured via rapid thermal processing en_US
dc.title.alternative Pelicule subțiri de oxid de cupru nanostructurat prin tratament termic rapid en_US
dc.type Article en_US

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