The Y3+ Donor-Doped CCTO (Ca0.95Y0.05Cu3Ti4O12) Dielectric Fillers for Electrical Output Enhancement of Flexible Triboelectric Nanogenerator

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dc.contributor.authorSaichompoo, Kittipan
dc.contributor.authorRattanawongwiboon, Thitirat
dc.contributor.authorKingkam, Wilasinee
dc.contributor.authorPakawanit, Phakkhananan
dc.contributor.authorSukkha, Usa
dc.contributor.authorOnoda, Hiroaki
dc.contributor.authorHajra, Sugato
dc.contributor.authorKhanapuram, Uday Kumar
dc.contributor.authorCharoonsuk, Thitirat
dc.contributor.authorVittayakorn, Naratip
dc.date.accessioned2026-08-06T10:55:52Z
dc.date.available2026-08-06T10:55:52Z
dc.date.issued2026-06-03
dc.description.abstractThe escalating wearable electronic devices with their flexible energy sources demand has rendered the imperative scientific challenge on the development of materials for the flexible triboelectric nanogenerators (F-TENG), one of advanced energy harvesting systems. Dielectric material optimization, the Y<sup>3+</sup> donor-doped calcium copper titanate based on exactly stoichiometric Ca<inf>0.95</inf>Y<inf>0.05</inf>Cu<inf>3</inf>Ti<inf>4</inf>O<inf>12</inf> (CCTYO), serves as a critical pathway in this work for achieving enhanced F-TENG via compositing with the polydimethylsiloxane (PDMS) polymer. The enhancement of electrical output has garnered substantial interest owing to its increased relative permittivity ((Formula presented.)). The influence of the loaded CCTYO amounts on structure, morphologies, dielectric properties, and electrical output, including open-circuit voltage (V<inf>OC</inf>), short-circuit current (I<inf>SC</inf>) and power density for PDMS/CCTYO composites is investigated. As compared with loading undoped CCTO, the additional Y<sup>3+</sup> can improve higher F-TENG output by increasing the (Formula presented.) along with maintaining the loss tangent (tan δ < 0.02) at optimized condition. The appropriate amounts of CCTYO 0.75 wt% make the PDMS/CCTYO F-TENG to achieve V<inf>OC</inf> of ∼76.4 V (8.5 V/cm<sup>2</sup>) and I<inf>SC</inf> of ∼130.0 μA (14.4 μA/cm<sup>2</sup>), which were higher than pristine PDMS for 2.7 and 4.3 times. The power density of 53 µW/cm<sup>2</sup> is 8.9 times higher than that of 6.3 µW/cm<sup>2</sup> from the pristine PDMS. This study also provides a COMSOL multiphysics simulation, bridging laboratory experiments, for quantifying the triboelectric capability of dielectric materials.
dc.identifier.citationAdvanced Engineering Materials, 28(11), 2026
dc.identifier.doi10.1002/adem.202503196
dc.identifier.issn14381656
dc.identifier.other2-s2.0-105034428524
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/18185
dc.sourceAdvanced Engineering Materials
dc.subjectcalcium copper titanate
dc.subjectCCTO
dc.subjectdonor-doped CCTO
dc.subjectflexible triboelectric nanogenerator
dc.subjectpolydimethylsiloxane (PDMS)
dc.titleThe Y3+ Donor-Doped CCTO (Ca0.95Y0.05Cu3Ti4O12) Dielectric Fillers for Electrical Output Enhancement of Flexible Triboelectric Nanogenerator
dc.typeArticle

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