Air-stable n-type colloidal quantum dot solids

Handle URI:
http://hdl.handle.net/10754/563593
Title:
Air-stable n-type colloidal quantum dot solids
Authors:
Ning, Zhijun; Voznyy, Oleksandr; Pan, Jun; Hoogland, Sjoerd H.; Adinolfi, Valerio; Xu, Jixian; Li, Min; Kirmani, Ahmad R. ( 0000-0002-8351-3762 ) ; Sun, Jonpaul; Minor, James C.; Kemp, Kyle W.; Dong, Haopeng; Rollny, Lisa R.; Labelle, André J.; Carey, Graham H.; Sutherland, Brandon R.; Hill, Ian G.; Amassian, Aram ( 0000-0002-5734-1194 ) ; Liu, Huan; Tang, Jiang; Bakr, Osman M. ( 0000-0002-3428-1002 ) ; Sargent, E. H.
Abstract:
Colloidal quantum dots (CQDs) offer promise in flexible electronics, light sensing and energy conversion. These applications rely on rectifying junctions that require the creation of high-quality CQD solids that are controllably n-type (electron-rich) or p-type (hole-rich). Unfortunately, n-type semiconductors made using soft matter are notoriously prone to oxidation within minutes of air exposure. Here we report high-performance, air-stable n-type CQD solids. Using density functional theory we identify inorganic passivants that bind strongly to the CQD surface and repel oxidative attack. A materials processing strategy that wards off strong protic attack by polar solvents enabled the synthesis of an air-stable n-type PbS CQD solid. This material was used to build an air-processed inverted quantum junction device, which shows the highest current density from any CQD solar cell and a solar power conversion efficiency as high as 8%. We also feature the n-type CQD solid in the rapid, sensitive, and specific detection of atmospheric NO2. This work paves the way for new families of electronic devices that leverage air-stable quantum-tuned materials. © 2014 Macmillan Publishers Limited. All rights reserved.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Solar and Photovoltaic Engineering Research Center (SPERC); Materials Science and Engineering Program; Organic Electronics and Photovoltaics Group; Functional Nanomaterials Lab (FuNL)
Publisher:
Springer Nature
Journal:
Nature Materials
Issue Date:
8-Jun-2014
DOI:
10.1038/nmat4007
Type:
Article
ISSN:
14761122
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. We thank Angstrom Engineering, and Innovative Technology, for useful discussions regarding material deposition methods and control of the glovebox environment, respectively. Computations were performed using the BlueGene/Q supercomputer at the SciNet HPC Consortium provided through the Southern Ontario Smart Computing Innovation Platform (SOSCIP). The SOSCIP consortium is funded by the Ontario Government and the Federal Economic Development Agency for Southern Ontario. H.D. would like to acknowledge financial support from the China Scholarship Council (CSC). The authors thank Larissa Levina for the assistance with CQDs synthesis, S. M. Thon, A. H. Ip and M. Adachi for helpful discussions, S. Masala and J. McDowell for measurement assistance, and E. Palmiano, R. Wolowiec and D. Kopilovic for their help during the course of study. We thank L. Goncharova for assistance with RBS measurements.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; Solar and Photovoltaic Engineering Research Center (SPERC)

Full metadata record

DC FieldValue Language
dc.contributor.authorNing, Zhijunen
dc.contributor.authorVoznyy, Oleksandren
dc.contributor.authorPan, Junen
dc.contributor.authorHoogland, Sjoerd H.en
dc.contributor.authorAdinolfi, Valerioen
dc.contributor.authorXu, Jixianen
dc.contributor.authorLi, Minen
dc.contributor.authorKirmani, Ahmad R.en
dc.contributor.authorSun, Jonpaulen
dc.contributor.authorMinor, James C.en
dc.contributor.authorKemp, Kyle W.en
dc.contributor.authorDong, Haopengen
dc.contributor.authorRollny, Lisa R.en
dc.contributor.authorLabelle, André J.en
dc.contributor.authorCarey, Graham H.en
dc.contributor.authorSutherland, Brandon R.en
dc.contributor.authorHill, Ian G.en
dc.contributor.authorAmassian, Aramen
dc.contributor.authorLiu, Huanen
dc.contributor.authorTang, Jiangen
dc.contributor.authorBakr, Osman M.en
dc.contributor.authorSargent, E. H.en
dc.date.accessioned2015-08-03T11:55:14Zen
dc.date.available2015-08-03T11:55:14Zen
dc.date.issued2014-06-08en
dc.identifier.issn14761122en
dc.identifier.doi10.1038/nmat4007en
dc.identifier.urihttp://hdl.handle.net/10754/563593en
dc.description.abstractColloidal quantum dots (CQDs) offer promise in flexible electronics, light sensing and energy conversion. These applications rely on rectifying junctions that require the creation of high-quality CQD solids that are controllably n-type (electron-rich) or p-type (hole-rich). Unfortunately, n-type semiconductors made using soft matter are notoriously prone to oxidation within minutes of air exposure. Here we report high-performance, air-stable n-type CQD solids. Using density functional theory we identify inorganic passivants that bind strongly to the CQD surface and repel oxidative attack. A materials processing strategy that wards off strong protic attack by polar solvents enabled the synthesis of an air-stable n-type PbS CQD solid. This material was used to build an air-processed inverted quantum junction device, which shows the highest current density from any CQD solar cell and a solar power conversion efficiency as high as 8%. We also feature the n-type CQD solid in the rapid, sensitive, and specific detection of atmospheric NO2. This work paves the way for new families of electronic devices that leverage air-stable quantum-tuned materials. © 2014 Macmillan Publishers Limited. All rights reserved.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. We thank Angstrom Engineering, and Innovative Technology, for useful discussions regarding material deposition methods and control of the glovebox environment, respectively. Computations were performed using the BlueGene/Q supercomputer at the SciNet HPC Consortium provided through the Southern Ontario Smart Computing Innovation Platform (SOSCIP). The SOSCIP consortium is funded by the Ontario Government and the Federal Economic Development Agency for Southern Ontario. H.D. would like to acknowledge financial support from the China Scholarship Council (CSC). The authors thank Larissa Levina for the assistance with CQDs synthesis, S. M. Thon, A. H. Ip and M. Adachi for helpful discussions, S. Masala and J. McDowell for measurement assistance, and E. Palmiano, R. Wolowiec and D. Kopilovic for their help during the course of study. We thank L. Goncharova for assistance with RBS measurements.en
dc.publisherSpringer Natureen
dc.titleAir-stable n-type colloidal quantum dot solidsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentSolar and Photovoltaic Engineering Research Center (SPERC)en
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentOrganic Electronics and Photovoltaics Groupen
dc.contributor.departmentFunctional Nanomaterials Lab (FuNL)en
dc.identifier.journalNature Materialsen
dc.contributor.institutionUniv Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canadaen
dc.contributor.institutionHuazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan 430074, Hubei, Peoples R Chinaen
dc.contributor.institutionDalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS B3H 4R2, Canadaen
dc.contributor.institutionHuazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R Chinaen
kaust.authorPan, Junen
kaust.authorAmassian, Aramen
kaust.authorBakr, Osman M.en
kaust.authorKirmani, Ahmad R.en
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