DC Field | Value | Language |
---|---|---|
dc.contributor.author | KWON, HYUNAH | - |
dc.contributor.author | Lee, Y | - |
dc.contributor.author | Hwang, S | - |
dc.contributor.author | Kim, J.K. | - |
dc.date.accessioned | 2017-07-19T12:58:34Z | - |
dc.date.available | 2017-07-19T12:58:34Z | - |
dc.date.created | 2017-01-04 | - |
dc.date.issued | 2017-03 | - |
dc.identifier.issn | 0925-4005 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/36712 | - |
dc.description.abstract | Despite growing demands for high performance hydrogen (H-2) sensors operating at low temperature, metal oxides-based H-2 sensors intrinsically require an elevated operating temperature due to a high activation energy for gas adsorption on metal oxides surface. Here, we present a highly-sensitive H-2 sensor operating even at room temperature, enabled by the Pt/TiO2 nanoscale Schottky contacts which utilizes sensitive modulation of the Schottky barrier height by dissociative H-2 adsorption on the catalytic Pt layer, followed by the dipole layer formation at the junction. Our device showed very high H-2 response and short response and recovery times at low temperatures which are attributed to the unique device architecture having the highly-porous nanoscale Schottky contacts facilitating the gas diffusion and dissociation, and the top-and-bottom electrodes configuration making effective current modulation. Based on our results, we propose Schottky contact-assisted H-2 sensing mechanisms and a promising approach to further improve H-2 sensing performance at room temperature. (C) 2016 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.publisher | Elsevier | - |
dc.relation.isPartOf | SENSORS AND ACTUATORS B-CHEMICAL | - |
dc.title | Highly-sensitive H2 sensor operating at room temperature using Pt/TiO2 nanoscale Schottky contacts | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/J.SNB.2016.11.022 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | SENSORS AND ACTUATORS B-CHEMICAL, v.241, pp.985 - 992 | - |
dc.identifier.wosid | 000395554700007 | - |
dc.date.tcdate | 2019-02-01 | - |
dc.citation.endPage | 992 | - |
dc.citation.startPage | 985 | - |
dc.citation.title | SENSORS AND ACTUATORS B-CHEMICAL | - |
dc.citation.volume | 241 | - |
dc.contributor.affiliatedAuthor | KWON, HYUNAH | - |
dc.contributor.affiliatedAuthor | Kim, J.K. | - |
dc.identifier.scopusid | 2-s2.0-84994404401 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 15 | - |
dc.type.docType | ARTICLE | - |
dc.subject.keywordPlus | KAHLER-EINSTEIN METRICS | - |
dc.subject.keywordPlus | WEIGHTED COMPLETE-INTERSECTIONS | - |
dc.subject.keywordPlus | FANO THREEFOLD HYPERSURFACES | - |
dc.subject.keywordPlus | SEXTIC DOUBLE SOLIDS | - |
dc.subject.keywordPlus | SINGULARITIES | - |
dc.subject.keywordPlus | VARIETIES | - |
dc.subject.keywordPlus | MANIFOLDS | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | SURFACES | - |
dc.subject.keywordPlus | LIMITS | - |
dc.subject.keywordAuthor | Fano hypersurface | - |
dc.subject.keywordAuthor | weighted projective space | - |
dc.subject.keywordAuthor | birationally rigid | - |
dc.subject.keywordAuthor | birational involution | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Analytical | - |
dc.relation.journalWebOfScienceCategory | Electrochemistry | - |
dc.relation.journalWebOfScienceCategory | Instruments & Instrumentation | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Electrochemistry | - |
dc.relation.journalResearchArea | Instruments & Instrumentation | - |
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