DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, J. | - |
dc.contributor.author | Park, S. | - |
dc.contributor.author | Jang, H. | - |
dc.contributor.author | Koirala, N. | - |
dc.contributor.author | Lee, J.-B. | - |
dc.contributor.author | Kim, U.J. | - |
dc.contributor.author | Lee, H.-S. | - |
dc.contributor.author | Roh, Y.-G. | - |
dc.contributor.author | Lee, H. | - |
dc.contributor.author | Sim, S. | - |
dc.contributor.author | Cha, S. | - |
dc.contributor.author | In, C. | - |
dc.contributor.author | Park, J. | - |
dc.contributor.author | Lee, J. | - |
dc.contributor.author | Noh, M. | - |
dc.contributor.author | Moon, J. | - |
dc.contributor.author | Salehi, M. | - |
dc.contributor.author | Sung, J. | - |
dc.contributor.author | Chee, S.-S. | - |
dc.contributor.author | Ham, M.-H. | - |
dc.contributor.author | Jo, M.-H. | - |
dc.contributor.author | Oh, S. | - |
dc.contributor.author | Ahn, J.-H. | - |
dc.contributor.author | Hwang, S.W. | - |
dc.contributor.author | Kim, D. | - |
dc.contributor.author | Choi, H. | - |
dc.date.accessioned | 2018-06-15T05:29:06Z | - |
dc.date.available | 2018-06-15T05:29:06Z | - |
dc.date.created | 2017-12-21 | - |
dc.date.issued | 2017-02 | - |
dc.identifier.issn | 2330-4022 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/50525 | - |
dc.description.abstract | Broadband detection of mid-infrared (IR) photons extends to advanced optoelectronic applications such as imaging, sensing, and telecommunications. While graphene offers an attractive platform for broadband visible/IR photodetection, previous efforts to improve its responsivity, for example, by integrating light-absorbing colloids or waveguide or antenna fabrication, were achieved at the cost of reduced photon detection bandwidth. In this work, we demonstrate room-temperature operation of a novel mid-IR photodetector based on a graphene-Bi2Se3 heterostructure showing broadband detection and high responsivity (1.97 and 8.18 A/W at mid- and near-IR, respectively), in which simultaneous improvement of the spectral range and responsivity is achieved via exploiting broadband absorption of mid-IR and IR photons in a small-band-gap Bi2Se3 topological insulator and efficient hot carrier separation and strong photogating across the Bi2Se3/graphene interface. With sufficient room for further improvement by interface engineering, our results show a promising route to realize ultrabroadband, high-responsivity hot-carrier optoelectronics at room temperature. ? 2017 American Chemical Society. | - |
dc.language | English | - |
dc.publisher | American Chemical Society | - |
dc.relation.isPartOf | ACS Photonics | - |
dc.subject | Electric insulators | - |
dc.subject | Energy gap | - |
dc.subject | Graphene | - |
dc.subject | Heterojunctions | - |
dc.subject | High temperature engineering | - |
dc.subject | Hot carriers | - |
dc.subject | Infrared devices | - |
dc.subject | Photons | - |
dc.subject | Broadband absorption | - |
dc.subject | Broadband detection | - |
dc.subject | Interface engineering | - |
dc.subject | Optoelectronic applications | - |
dc.subject | Photo detection | - |
dc.subject | photogating effect | - |
dc.subject | Room-temperature operation | - |
dc.subject | Topological insulators | - |
dc.subject | Photodetectors | - |
dc.title | Highly Sensitive, Gate-Tunable, Room-Temperature Mid-Infrared Photodetection Based on Graphene-Bi2Se3 Heterostructure | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/acsphotonics.6b00972 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | ACS Photonics, v.4, no.3, pp.482 - 488 | - |
dc.identifier.wosid | 000396808000012 | - |
dc.date.tcdate | 2019-02-01 | - |
dc.citation.endPage | 488 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 482 | - |
dc.citation.title | ACS Photonics | - |
dc.citation.volume | 4 | - |
dc.contributor.affiliatedAuthor | Jo, M.-H. | - |
dc.identifier.scopusid | 2-s2.0-85015800481 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 6 | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | TOPOLOGICAL INSULATOR | - |
dc.subject.keywordPlus | HIGH-RESPONSIVITY | - |
dc.subject.keywordPlus | PHOTOCURRENT GENERATION | - |
dc.subject.keywordPlus | SURFACE | - |
dc.subject.keywordPlus | BI2SE3 | - |
dc.subject.keywordPlus | DIELECTRICS | - |
dc.subject.keywordPlus | TRANSISTORS | - |
dc.subject.keywordPlus | COLLECTION | - |
dc.subject.keywordPlus | DETECTORS | - |
dc.subject.keywordPlus | TERAHERTZ | - |
dc.subject.keywordAuthor | photodetectors | - |
dc.subject.keywordAuthor | mid-infrared photodetection | - |
dc.subject.keywordAuthor | topological insulators | - |
dc.subject.keywordAuthor | graphene | - |
dc.subject.keywordAuthor | heterostructure | - |
dc.subject.keywordAuthor | photogating effect | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Optics | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Optics | - |
dc.relation.journalResearchArea | Physics | - |
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