Počet záznamů: 1
Chemiresistors Based on Li-Doped CuO-TiO2 Films
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SYSNO ASEP 0546331 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Chemiresistors Based on Li-Doped CuO-TiO2 Films Tvůrce(i) Torrisi, Alfio (UJF-V) RID, ORCID
Vacík, Jiří (UJF-V) RID, ORCID, SAI
Ceccio, Giovanni (UJF-V) ORCID, RID, SAI
Cannavó, Antonino (UJF-V) ORCID, SAI
Lavrentiev, Vasyl (UJF-V) RID, ORCID, SAI
Horák, Pavel (UJF-V) RID, ORCID
Yatskiv, Roman (URE-Y) RID, ORCID
Vaniš, Jan (URE-Y) RID
Grym, Jan (URE-Y)
Fišer, L. (CZ)
Hruška, M. (CZ)
Otta, J. (CZ)
Vrňata, M. (CZ)
Fitl, P. (CZ)Celkový počet autorů 14 Číslo článku 246 Zdroj.dok. Chemosensors. - : MDPI
Roč. 9, č. 9 (2021)Poč.str. 20 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova chemiresistor ; CuO-TiO2 heterojunction ; Li-doping Vědní obor RIV CG - Elektrochemie Obor OECD Nuclear physics Vědní obor RIV – spolupráce Ústav fotoniky a elektroniky - Elektronika a optoelektronika, elektrotechnika CEP GA19-02804S GA ČR - Grantová agentura ČR Výzkumná infrastruktura CANAM II - 90056 - Ústav jaderné fyziky AV ČR, v. v. i.
Reactors LVR-15 and LR-0 II - 90120 - Centrum výzkumu Řež s.r.o.Způsob publikování Open access Institucionální podpora URE-Y - RVO:67985882 ; UJF-V - RVO:61389005 UT WOS 000699256200001 EID SCOPUS 85114992369 DOI 10.3390/chemosensors9090246 Anotace Chemiresistors based on thin films of the Li-doped CuO-TiO2 heterojunctions were synthesized by a 2-step method: (i) repeated ion beam sputtering of the building elements (on the Si substrates and multisensor platforms), and (ii) thermal annealing in flowing air. The structure and composition of the films were analyzed by several methods: Rutherford Backscattering (RBS), Neutron Depth Profiling (NDP), Secondary Ion Mass Spectrometry (SIMS), and Atomic Force Microscopy (AFM), and their sensitivity to gaseous analytes was evaluated using a specific lab-made device operating in a continuous gas flow mode. The obtained results showed that the Li doping significantly increased the sensitivity of the sensors to oxidizing gases, such as NO2, O-3, and Cl-2, but not to reducing H-2. The sensing response of the CuO-TiO2-Li chemiresistors improved with increasing Li content. For the best sensors with about 15% Li atoms, the detection limits were as follows: NO2 -> 0.5 ppm, O-3 -> 10 ppb, and Cl-2 -> 0.1 ppm. The Li-doped sensors showed excellent sensing performance at a lower operating temperature (200 degrees C). However, even though their response time was only a few minutes, their recovery was slow (up to a few hours) and incomplete. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2022 Elektronická adresa https://doi.org/10.3390/chemosensors9090246
Počet záznamů: 1