AlGaN/GaN heterojunction hydrogen sensor using ZnO-nanoparticles/Pd dual catalyst layer
DC Field | Value | Language |
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dc.contributor.author | Choi, June-Heang | - |
dc.contributor.author | Park, Taehyun | - |
dc.contributor.author | Hur, Jaehyun | - |
dc.contributor.author | Cha, Ho-Young | - |
dc.date.available | 2021-03-17T06:47:55Z | - |
dc.date.created | 2021-02-26 | - |
dc.date.issued | 2020-12-15 | - |
dc.identifier.issn | 0925-4005 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/11412 | - |
dc.description.abstract | ZnO-nanoparticles (NPs) were investigated for improving the response characteristics of a Pd-functionalized AlGaN/GaN heterojunction-based hydrogen gas sensor. The ZnO-NPs of diameter similar to 10 nm were dispersed in a co-solvent of chloroform/ethanol (chloroform 75 %, v/v), which was found to be an optimal solution for uniform dispersion, and spin coated on the surface of the fabricated Pd/AlGaN/GaN hydrogen sensor. The ZnO-NP synthesis and dispersion methods were optimized carefully before being applied to sensor fabrication. It was observed that the addition of ZnO-NPs to the Pd catalyst enhanced the hydrogen absorption so that the response of the hydrogen sensor was improved. Compared with the single Pd catalyst layer, the ZnO-NPs/Pd double layer exhibited superior response characteristics-a response of similar to 210 % and response time of similar to 2 s were achieved at 200 degrees C with a bias voltage of 3 V. | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | AlGaN/GaN heterojunction hydrogen sensor using ZnO-nanoparticles/Pd dual catalyst layer | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Cha, Ho-Young | - |
dc.identifier.doi | 10.1016/j.snb.2020.128946 | - |
dc.identifier.scopusid | 2-s2.0-85091950861 | - |
dc.identifier.wosid | 000581627000048 | - |
dc.identifier.bibliographicCitation | SENSORS AND ACTUATORS B-CHEMICAL, v.325 | - |
dc.relation.isPartOf | SENSORS AND ACTUATORS B-CHEMICAL | - |
dc.citation.title | SENSORS AND ACTUATORS B-CHEMICAL | - |
dc.citation.volume | 325 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Electrochemistry | - |
dc.relation.journalResearchArea | Instruments & Instrumentation | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Analytical | - |
dc.relation.journalWebOfScienceCategory | Electrochemistry | - |
dc.relation.journalWebOfScienceCategory | Instruments & Instrumentation | - |
dc.subject.keywordPlus | SCHOTTKY DIODES | - |
dc.subject.keywordPlus | PD | - |
dc.subject.keywordPlus | SENSITIVITY | - |
dc.subject.keywordPlus | H-2 | - |
dc.subject.keywordAuthor | Pd catalyst | - |
dc.subject.keywordAuthor | Hydrogen sensor | - |
dc.subject.keywordAuthor | ZnO nanoparticle | - |
dc.subject.keywordAuthor | Nanoparticle synthesis | - |
dc.subject.keywordAuthor | AlGaN/GaN heterojunction | - |
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