Publication:
Quantum dot and electron acceptor nano-heterojunction for photo-induced capacitive charge-transfer

dc.contributor.coauthorOw-Yang, Cleva W.
dc.contributor.coauthorŞahin, Mehmet
dc.contributor.departmentDepartment of Electrical and Electronics Engineering
dc.contributor.departmentGraduate School of Sciences and Engineering
dc.contributor.kuauthorEren, Güncem Özgün
dc.contributor.kuauthorKaratüm, Onuralp
dc.contributor.kuauthorMelikov, Rustamzhon
dc.contributor.kuauthorNizamoğlu, Sedat
dc.contributor.kuauthorÖnal, Asım
dc.contributor.schoolcollegeinstituteCollege of Engineering
dc.contributor.schoolcollegeinstituteGRADUATE SCHOOL OF SCIENCES AND ENGINEERING
dc.date.accessioned2024-11-09T12:11:34Z
dc.date.issued2021
dc.description.abstractCapacitive charge transfer at the electrode/electrolyte interface is a biocompatible mechanism for the stimulation of neurons. Although quantum dots showed their potential for photostimulation device architectures, dominant photoelectrochemical charge transfer combined with heavy-metal content in such architectures hinders their safe use. In this study, we demonstrate heavy-metal-free quantum dot-based nano-heterojunction devices that generate capacitive photoresponse. For that, we formed a novel form of nano-heterojunctions using type-II InP/ZnO/ZnS core/shell/shell quantum dot as the donor and a fullerene derivative of PCBM as the electron acceptor. The reduced electron-hole wavefunction overlap of 0.52 due to type-II band alignment of the quantum dot and the passivation of the trap states indicated by the high photoluminescence quantum yield of 70% led to the domination of photoinduced capacitive charge transfer at an optimum donor-acceptor ratio. This study paves the way toward safe and efficient nanoengineered quantum dot-based next-generation photostimulation devices.
dc.description.fulltextYES
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.indexedbyPubMed
dc.description.openaccessYES
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuEU
dc.description.sponsorshipEuropean Union (EU)
dc.description.sponsorshipHorizon 2020
dc.description.sponsorshipEuropean Research Council (ERC)
dc.description.versionPublisher version
dc.description.volume11
dc.identifier.doi10.1038/s41598-021-82081-y
dc.identifier.embargoNO
dc.identifier.filenameinventorynoIR02682
dc.identifier.issn2045-2322
dc.identifier.quartileQ2
dc.identifier.scopus2-s2.0-85100037112
dc.identifier.urihttps://hdl.handle.net/20.500.14288/1075
dc.identifier.wos616817000059
dc.keywordsMaterials for devices
dc.keywordsQuantum dots
dc.language.isoeng
dc.publisherNature Publishing Group (NPG)
dc.relation.grantno639846
dc.relation.ispartofScientific Reports
dc.relation.urihttp://cdm21054.contentdm.oclc.org/cdm/ref/collection/IR/id/9328
dc.subjectScience and technology
dc.titleQuantum dot and electron acceptor nano-heterojunction for photo-induced capacitive charge-transfer
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorKaratüm, Onuralp
local.contributor.kuauthorMelikov, Rustamzhon
local.contributor.kuauthorEren, Güncem Özgün
local.contributor.kuauthorÖnal, Asım
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
relation.isOrgUnitOfPublication21598063-a7c5-420d-91ba-0cc9b2db0ea0
relation.isOrgUnitOfPublication3fc31c89-e803-4eb1-af6b-6258bc42c3d8
relation.isOrgUnitOfPublication.latestForDiscovery21598063-a7c5-420d-91ba-0cc9b2db0ea0
relation.isParentOrgUnitOfPublication8e756b23-2d4a-4ce8-b1b3-62c794a8c164
relation.isParentOrgUnitOfPublication434c9663-2b11-4e66-9399-c863e2ebae43
relation.isParentOrgUnitOfPublication.latestForDiscovery8e756b23-2d4a-4ce8-b1b3-62c794a8c164

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
9328.pdf
Size:
3.56 MB
Format:
Adobe Portable Document Format