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High-k dielectric composites of poly(2-cyanoethyl vinyl ether) and barium titanate for flexible electronics
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SYSNO ASEP 0475651 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název High-k dielectric composites of poly(2-cyanoethyl vinyl ether) and barium titanate for flexible electronics Tvůrce(i) Piana, Francesco (UMCH-V) RID, ORCID
Pfleger, Jiří (UMCH-V) RID, ORCID
Jambor, R. (CZ)
Řičica, T. (CZ)
Macák, J. M. (CZ)Číslo článku 45236 Zdroj.dok. Journal of Applied Polymer Science. - : Wiley - ISSN 0021-8995
Roč. 134, č. 37 (2017), s. 1-10Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova composites ; dielectric properties ; nanocrystals Vědní obor RIV CG - Elektrochemie Obor OECD Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis) CEP TE01020022 GA TA ČR - Technologická agentura ČR LO1507 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000404128400002 EID SCOPUS 85019145843 DOI https://doi.org/10.1002/app.45236 Anotace High-k dielectric composite material for electronic applications was obtained by mixing a polymer with high dielectric constant, poly(2-cyanoethyl vinyl ether) (CEPVA), and highly crystalline barium titanate (BT). Barium titanate nanoparticles of a size in the range 40-90nm were prepared by the solvothermal method. By optimizing the reaction conditions, the formation of carbonate impurities and the agglomeration of formed nanoparticles were significantly reduced compared to state-of-the-art procedures. Dielectric spectroscopy was measured in the range of 0.01Hz to 10 MHz and showed the dielectric constant to be epsilon ' similar to 35-40 with only 30 vol % content of BT in the composite. Extrapolating to 100% BT nanoparticle concentration and using the Lichtenecker model, the dielectric constant epsilon ' = 365 +/- 27 at 10 kHz was obtained. The relaxation and electrical properties were investigated in depth, and a new relaxation phenomenon was revealed. CEPVA/BT composite is considered suitable for electronic applications, in which high together with a good mechanical flexibility are required, such as organic field effect transistors. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2018
Počet záznamů: 1