Single-step fabrication of quantum funnels via centrifugal colloidal casting of nanoparticle films.

Handle URI:
http://hdl.handle.net/10754/596815
Title:
Single-step fabrication of quantum funnels via centrifugal colloidal casting of nanoparticle films.
Authors:
Kim, Jin Young; Adinolfi, Valerio; Sutherland, Brandon R; Voznyy, Oleksandr; Kwon, S Joon; Kim, Tae Wu; Kim, Jeongho; Ihee, Hyotcherl; Kemp, Kyle; Adachi, Michael; Yuan, Mingjian; Kramer, Illan; Zhitomirsky, David; Hoogland, Sjoerd; Sargent, Edward H
Abstract:
Centrifugal casting of composites and ceramics has been widely employed to improve the mechanical and thermal properties of functional materials. This powerful method has yet to be deployed in the context of nanoparticles--yet size-effect tuning of quantum dots is among their most distinctive and application-relevant features. Here we report the first gradient nanoparticle films to be constructed in a single step. By creating a stable colloid of nanoparticles that are capped with electronic-conduction-compatible ligands we were able to leverage centrifugal casting for thin-films devices. This new method, termed centrifugal colloidal casting, is demonstrated to form films in a bandgap-ordered manner with efficient carrier funnelling towards the lowest energy layer. We constructed the first quantum-gradient photodiode to be formed in a single deposition step and, as a result of the gradient-enhanced electric field, experimentally measured the highest normalized detectivity of any colloidal quantum dot photodetector.
Citation:
Kim JY, Adinolfi V, Sutherland BR, Voznyy O, Kwon SJ, et al. (2015) Single-step fabrication of quantum funnels via centrifugal colloidal casting of nanoparticle films. Nat Comms 6: 7772. Available: http://dx.doi.org/10.1038/ncomms8772.
Publisher:
Nature Publishing Group
Journal:
Nature Communications
KAUST Grant Number:
KUS-11-009-21
Issue Date:
13-Jul-2015
DOI:
10.1038/ncomms8772
PubMed ID:
26165185
PubMed Central ID:
PMC4510961
Type:
Article
ISSN:
2041-1723
Sponsors:
This publication is based in part on work supported by Award KUS-11-009-21, made by King Abdullah University of Science and Technology (KAUST), by the Ontario Research Fund Research Excellence Program and by the Natural Sciences and Engineering Research Council (NSERC) of Canada. This work was supported by the Korean Government through the New and Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by MOTIE (No.20133030011320) and by KIST through Institutional Project (2E25411). This work was supported by IBS-R004-G2. J.Y.K. extends appreciation for an NSERC Banting postdoctoral fellowship. We thank E. Palmiano, L. Levina, R. Wolowiec and D. Kopilovic for their help during the course of the study.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorKim, Jin Youngen
dc.contributor.authorAdinolfi, Valerioen
dc.contributor.authorSutherland, Brandon Ren
dc.contributor.authorVoznyy, Oleksandren
dc.contributor.authorKwon, S Joonen
dc.contributor.authorKim, Tae Wuen
dc.contributor.authorKim, Jeonghoen
dc.contributor.authorIhee, Hyotcherlen
dc.contributor.authorKemp, Kyleen
dc.contributor.authorAdachi, Michaelen
dc.contributor.authorYuan, Mingjianen
dc.contributor.authorKramer, Illanen
dc.contributor.authorZhitomirsky, Daviden
dc.contributor.authorHoogland, Sjoerden
dc.contributor.authorSargent, Edward Hen
dc.date.accessioned2016-02-21T08:51:13Zen
dc.date.available2016-02-21T08:51:13Zen
dc.date.issued2015-07-13en
dc.identifier.citationKim JY, Adinolfi V, Sutherland BR, Voznyy O, Kwon SJ, et al. (2015) Single-step fabrication of quantum funnels via centrifugal colloidal casting of nanoparticle films. Nat Comms 6: 7772. Available: http://dx.doi.org/10.1038/ncomms8772.en
dc.identifier.issn2041-1723en
dc.identifier.pmid26165185en
dc.identifier.doi10.1038/ncomms8772en
dc.identifier.urihttp://hdl.handle.net/10754/596815en
dc.description.abstractCentrifugal casting of composites and ceramics has been widely employed to improve the mechanical and thermal properties of functional materials. This powerful method has yet to be deployed in the context of nanoparticles--yet size-effect tuning of quantum dots is among their most distinctive and application-relevant features. Here we report the first gradient nanoparticle films to be constructed in a single step. By creating a stable colloid of nanoparticles that are capped with electronic-conduction-compatible ligands we were able to leverage centrifugal casting for thin-films devices. This new method, termed centrifugal colloidal casting, is demonstrated to form films in a bandgap-ordered manner with efficient carrier funnelling towards the lowest energy layer. We constructed the first quantum-gradient photodiode to be formed in a single deposition step and, as a result of the gradient-enhanced electric field, experimentally measured the highest normalized detectivity of any colloidal quantum dot photodetector.en
dc.description.sponsorshipThis publication is based in part on work supported by Award KUS-11-009-21, made by King Abdullah University of Science and Technology (KAUST), by the Ontario Research Fund Research Excellence Program and by the Natural Sciences and Engineering Research Council (NSERC) of Canada. This work was supported by the Korean Government through the New and Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by MOTIE (No.20133030011320) and by KIST through Institutional Project (2E25411). This work was supported by IBS-R004-G2. J.Y.K. extends appreciation for an NSERC Banting postdoctoral fellowship. We thank E. Palmiano, L. Levina, R. Wolowiec and D. Kopilovic for their help during the course of the study.en
dc.publisherNature Publishing Groupen
dc.rightsThis work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visiten
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleSingle-step fabrication of quantum funnels via centrifugal colloidal casting of nanoparticle films.en
dc.typeArticleen
dc.identifier.journalNature Communicationsen
dc.identifier.pmcidPMC4510961en
dc.contributor.institution1] Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4, Canada [2] Fuel Cell Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea.en
dc.contributor.institutionDepartment of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4, Canada.en
dc.contributor.institutionNanophotonics Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea.en
dc.contributor.institution1] Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 305-701, Republic of Korea [2] Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea.en
dc.contributor.institutionDepartment of Chemistry, Inha University, Incheon 402-751, Republic of Korea.en
kaust.grant.numberKUS-11-009-21en

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