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Light-emitting devices based on Type-II InP/ZnO quantum dots

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dc.contributor.coauthorN/A
dc.contributor.departmentDepartment of Electrical and Electronics Engineering
dc.contributor.departmentGraduate School of Sciences and Engineering
dc.contributor.kuauthorJalali, Houman Bahmani
dc.contributor.kuauthorKaratüm, Onuralp
dc.contributor.kuauthorMelikov, Rustamzhon
dc.contributor.kuauthorNizamoğlu, Sedat
dc.contributor.kuauthorSadeghi, Sadra
dc.contributor.kuauthorSrivastava, Shashi Bhushan
dc.contributor.schoolcollegeinstituteCollege of Engineering
dc.contributor.schoolcollegeinstituteGRADUATE SCHOOL OF SCIENCES AND ENGINEERING
dc.date.accessioned2024-11-10T00:01:07Z
dc.date.issued2019
dc.description.abstractOne of the major challenges for present-day quantum dot light-emitting diode (QLED) technology is the transition from toxic heavy metal to "green" material-based devices. This report proposes an alternative cadmium-free material of type-II InP/ZnO core/shell quantum dots (QDs) for QLEDs. In this study, InP/ZnO core/shell QDs are nanoengineered by adjusting the shell coverage for optimum in-film quantum efficiency, and device parameters are investigated to reach a maximum QLED performance. The fully solution processed QLEDs made of biocompatible and environmentally benign QDs presented in this study exhibit low turn on voltage of 2.8 V, external quantum efficiency of 0.53%, and current efficiency of 1 cd/A, with a saturated color emission in the yellow-orange spectral region. This study paves the way towards nontoxic and efficient LEDs using type-II QDs.
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.issue4
dc.description.openaccessNO
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuTÜBİTAK
dc.description.volume6
dc.identifier.doi10.1021/acsphotonics.8b01618
dc.identifier.issn2330-4022
dc.identifier.quartileQ1
dc.identifier.scopus2-s2.0-85063133976
dc.identifier.urihttps://doi.org/10.1021/acsphotonics.8b01618
dc.identifier.urihttps://hdl.handle.net/20.500.14288/15917
dc.identifier.wos465188900018
dc.keywordsColloidal quantum dots
dc.keywordsLight-emitting devices
dc.keywordsIndium phosphide
dc.keywordsType-Ii band alignment
dc.keywordsCurrent efficiency
dc.keywordsExternal quantum efficiency luminescent solar concentrators
dc.keywordsHigh-efficiency
dc.keywordsNanocrystals
dc.keywordsDiodes
dc.keywordsBright
dc.keywordsElectroluminescence
dc.keywordsEmission
dc.language.isoeng
dc.publisherAmerican Chemical Society (ACS)
dc.relation.grantnoTechnological Research Council of Turkey (TUBITAK) [115E242, 115E115]
dc.relation.grantnoTurkish Academy of Science and Science Academy This project has received funding from Technological Research Council of Turkey (TUBITAK) with Project Nos. 115E242 and 115E115. S.N. also acknowledges the support by Turkish Academy of Science and Science Academy. We thank KUYTAM (Koc University Surface Science and Technology Center) for AFM infrastructure and Ataturk University DAYTAM for UPS infrastructure. The authors gratefully acknowledge Dr. Amir Motallebzadeh for AFM measurements and Ahmet Emre Kasapoglu for UPS measurements.
dc.relation.ispartofACS Photonics
dc.subjectNanoscience and nanotechnology
dc.subjectMaterials science, Multidisciplinary
dc.subjectOptics
dc.subjectPhysics, Applied
dc.subjectPhysics, Condensed matter
dc.titleLight-emitting devices based on Type-II InP/ZnO quantum dots
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorKaratüm, Onuralp
local.contributor.kuauthorJalali, Houman Bahmani
local.contributor.kuauthorSadeghi, Sadra
local.contributor.kuauthorMelikov, Rustamzhon
local.contributor.kuauthorSrivastava, Shashi Bhushan
local.contributor.kuauthorNizamoğlu, Sedat
local.publication.orgunit1GRADUATE SCHOOL OF SCIENCES AND ENGINEERING
local.publication.orgunit1College of Engineering
local.publication.orgunit2Department of Electrical and Electronics Engineering
local.publication.orgunit2Graduate School of Sciences and Engineering
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relation.isOrgUnitOfPublication.latestForDiscovery21598063-a7c5-420d-91ba-0cc9b2db0ea0
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