Full metadata record

DC Field Value Language
dc.contributor.authorSeo, Junseok-
dc.contributor.authorLee, Jin Hee-
dc.contributor.authorPak, Jinsu-
dc.contributor.authorCho, Kyungjune-
dc.contributor.authorKim, Jae-Keun-
dc.contributor.authorKim, Jaeyoung-
dc.contributor.authorJang, Juntae-
dc.contributor.authorAhn, Heebeom-
dc.contributor.authorLim, Seong Chu-
dc.contributor.authorChung, Seungjun-
dc.contributor.authorKang, Keehoon-
dc.contributor.authorLee, Takhee-
dc.date.accessioned2024-01-19T13:34:22Z-
dc.date.available2024-01-19T13:34:22Z-
dc.date.created2021-10-21-
dc.date.issued2021-10-
dc.identifier.issn2198-3844-
dc.identifier.urihttps://pubs.kist.re.kr/handle/201004/116363-
dc.description.abstractRecently, there have been numerous studies on utilizing surface treatments or photosensitizing layers to improve photodetectors based on 2D materials. Meanwhile, avalanche breakdown phenomenon has provided an ultimate high-gain route toward photodetection in the form of single-photon detectors. Here, the authors report ultrasensitive avalanche phototransistors based on monolayer MoS2 synthesized by chemical vapor deposition. A lower critical field for the electrical breakdown under illumination shows strong evidence for avalanche breakdown initiated by photogenerated carriers in MoS2 channel. By utilizing the photo-initiated carrier multiplication, their avalanche photodetectors exhibit the maximum responsivity of approximate to 3.4 x 10(7) A W-1 and the detectivity of approximate to 4.3 x 10(16) Jones under a low dark current, which are a few orders of magnitudes higher than the highest values reported previously, despite the absence of any additional chemical treatments or photosensitizing layers. The realization of both the ultrahigh photoresponsivity and detectivity is attributed to the interplay between the carrier multiplication by avalanche breakdown and carrier injection across a Schottky barrier between the channel and metal electrodes. This work presents a simple and powerful method to enhance the performance of photodetectors based on carrier multiplication phenomena in 2D materials and provides the underlying physics of atomically thin avalanche photodetectors.-
dc.languageEnglish-
dc.publisherWILEY-
dc.subjectSCHOTTKY-BARRIER HEIGHT-
dc.subjectTRANSITION-
dc.subjectGRAPHENE-
dc.subjectOPTOELECTRONICS-
dc.subjectMULTIPLICATION-
dc.subjectSILICON-
dc.subjectGAIN-
dc.titleUltrasensitive Photodetection in MoS2 Avalanche Phototransistors-
dc.typeArticle-
dc.identifier.doi10.1002/advs.202102437-
dc.description.journalClass1-
dc.identifier.bibliographicCitationADVANCED SCIENCE, v.8, no.19-
dc.citation.titleADVANCED SCIENCE-
dc.citation.volume8-
dc.citation.number19-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.identifier.wosid000682722000001-
dc.identifier.scopusid2-s2.0-85112666282-
dc.relation.journalWebOfScienceCategoryChemistry, Multidisciplinary-
dc.relation.journalWebOfScienceCategoryNanoscience & Nanotechnology-
dc.relation.journalWebOfScienceCategoryMaterials Science, Multidisciplinary-
dc.relation.journalResearchAreaChemistry-
dc.relation.journalResearchAreaScience & Technology - Other Topics-
dc.relation.journalResearchAreaMaterials Science-
dc.type.docTypeArticle-
dc.subject.keywordPlusSCHOTTKY-BARRIER HEIGHT-
dc.subject.keywordPlusTRANSITION-
dc.subject.keywordPlusGRAPHENE-
dc.subject.keywordPlusOPTOELECTRONICS-
dc.subject.keywordPlusMULTIPLICATION-
dc.subject.keywordPlusSILICON-
dc.subject.keywordPlusGAIN-
dc.subject.keywordAuthoravalanche photodetectors-
dc.subject.keywordAuthorelectrical breakdown-
dc.subject.keywordAuthorfield-effect transistors-
dc.subject.keywordAuthorphotoresponsivity-
dc.subject.keywordAuthortransition metal dichalcogenide-
Appears in Collections:
KIST Article > 2021
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE