Graphite-metal composite electrodes with a tunable work function for use in optoelectronic devices
DC Field | Value | Language |
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dc.contributor.author | Kesavan, Arul Varman | - |
dc.contributor.author | Khot, Atul C. | - |
dc.contributor.author | Dongale, Tukaram D. | - |
dc.contributor.author | Son, Kyung Rock | - |
dc.contributor.author | Ramamurthy, Praveen C. | - |
dc.contributor.author | Kim, Tae Geun | - |
dc.date.accessioned | 2022-11-17T16:40:43Z | - |
dc.date.available | 2022-11-17T16:40:43Z | - |
dc.date.created | 2022-11-17 | - |
dc.date.issued | 2022-10-27 | - |
dc.identifier.issn | 2050-7526 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/145657 | - |
dc.description.abstract | In electronic devices, the work function (WF) of the electrodes must be tailored to achieve a well-aligned Ohmic or Schottky contact. Low- and high-WF electrodes are typically used to ensure effective injection/extraction of electrons and holes. In this study, composite graphite-aluminum (G : Al) and graphite-nickel (G : Ni) electrodes were deposited on a glass substrate using electron beam evaporation, and ambient pressure photoemission spectroscopy was conducted to evaluate the WF of the fabricated electrodes. The WF of the G : Al electrode was successfully tuned from 4.24 +/- 0.047 eV to 5.10 +/- 0.031 eV (a range of similar to 0.9 eV) by increasing the graphite content. Similarly, the WF of the G : Ni composite electrode was tuned from 4.67 +/- 0.041 eV to 5.11 +/- 0.031 eV (a range of similar to 0.4 eV). The shift in the WF in the composite graphite-metal electrodes could be explained by the formation of metal-metal (or semiconductor) junctions. The optical reflectance, sheet resistance, and morphology were also able to be tuned. The sheet resistance of the G : Al and G : Ni electrodes varied from 2.28 +/- 0.03 omega sq(-1) to 80.05 +/- 9.1 omega sq(-1) and from 4.92 +/- 0.04 omega sq(-1) to 166.30 +/- 4.1 omega sq(-1), respectively, while the total tunable reflectance was 53.77% and 45.70%, respectively. This research demonstrates a novel exploratory technique for tailoring the WF of hybrid graphite materials. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | CARBON | - |
dc.subject | CRYSTALLINE | - |
dc.subject | DEPOSITION | - |
dc.subject | STATES | - |
dc.title | Graphite-metal composite electrodes with a tunable work function for use in optoelectronic devices | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Tae Geun | - |
dc.identifier.doi | 10.1039/d2tc02848d | - |
dc.identifier.scopusid | 2-s2.0-85140265238 | - |
dc.identifier.wosid | 000860833300001 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY C, v.10, no.41, pp.15358 - 15366 | - |
dc.relation.isPartOf | JOURNAL OF MATERIALS CHEMISTRY C | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY C | - |
dc.citation.volume | 10 | - |
dc.citation.number | 41 | - |
dc.citation.startPage | 15358 | - |
dc.citation.endPage | 15366 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.subject.keywordPlus | CARBON | - |
dc.subject.keywordPlus | CRYSTALLINE | - |
dc.subject.keywordPlus | DEPOSITION | - |
dc.subject.keywordPlus | STATES | - |
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