Single-step colloidal quantum dot films for infrared solar harvesting

Handle URI:
http://hdl.handle.net/10754/621843
Title:
Single-step colloidal quantum dot films for infrared solar harvesting
Authors:
Kiani, Amirreza; Sutherland, Brandon R.; Kim, Younghoon; Ouellette, Olivier; Levina, Larissa; Walters, Grant; Dinh, Cao Thang; Liu, Mengxia; Voznyy, Oleksandr; Lan, Xinzheng; Labelle, Andre J.; Ip, Alexander H.; Proppe, Andrew; Ahmed, Ghada H.; Mohammed, Omar F. ( 0000-0001-8500-1130 ) ; Hoogland, Sjoerd; Sargent, Edward H.
Abstract:
Semiconductors with bandgaps in the near- to mid-infrared can harvest solar light that is otherwise wasted by conventional single-junction solar cell architectures. In particular, colloidal quantum dots (CQDs) are promising materials since they are cost-effective, processed from solution, and have a bandgap that can be tuned into the infrared (IR) via the quantum size effect. These characteristics enable them to harvest the infrared portion of the solar spectrum to which silicon is transparent. To date, IR CQD solar cells have been made using a wasteful and complex sequential layer-by-layer process. Here, we demonstrate ∼1 eV bandgap solar-harvesting CQD films deposited in a single step. By engineering a fast-drying solvent mixture for metal iodide-capped CQDs, we deposited active layers greater than 200 nm in thickness having a mean roughness less than 1 nm. We integrated these films into infrared solar cells that are stable in air and exhibit power conversion efficiencies of 3.5% under illumination by the full solar spectrum, and 0.4% through a simulated silicon solar cell filter.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Solar and Photovoltaic Engineering Research Center (SPERC)
Citation:
Kiani A, Sutherland BR, Kim Y, Ouellette O, Levina L, et al. (2016) Single-step colloidal quantum dot films for infrared solar harvesting. Applied Physics Letters 109: 183105. Available: http://dx.doi.org/10.1063/1.4966217.
Publisher:
AIP Publishing
Journal:
Applied Physics Letters
Issue Date:
1-Nov-2016
DOI:
10.1063/1.4966217
Type:
Article
ISSN:
0003-6951; 1077-3118
Sponsors:
This publication is based in part on the work supported by the Ontario Research Fund-Research Excellence Program, ORF #07-042.
Additional Links:
http://dx.doi.org/10.1063/1.4966217
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Solar and Photovoltaic Engineering Research Center (SPERC)

Full metadata record

DC FieldValue Language
dc.contributor.authorKiani, Amirrezaen
dc.contributor.authorSutherland, Brandon R.en
dc.contributor.authorKim, Younghoonen
dc.contributor.authorOuellette, Olivieren
dc.contributor.authorLevina, Larissaen
dc.contributor.authorWalters, Granten
dc.contributor.authorDinh, Cao Thangen
dc.contributor.authorLiu, Mengxiaen
dc.contributor.authorVoznyy, Oleksandren
dc.contributor.authorLan, Xinzhengen
dc.contributor.authorLabelle, Andre J.en
dc.contributor.authorIp, Alexander H.en
dc.contributor.authorProppe, Andrewen
dc.contributor.authorAhmed, Ghada H.en
dc.contributor.authorMohammed, Omar F.en
dc.contributor.authorHoogland, Sjoerden
dc.contributor.authorSargent, Edward H.en
dc.date.accessioned2016-11-21T06:21:07Z-
dc.date.available2016-11-21T06:21:07Z-
dc.date.issued2016-11-01en
dc.identifier.citationKiani A, Sutherland BR, Kim Y, Ouellette O, Levina L, et al. (2016) Single-step colloidal quantum dot films for infrared solar harvesting. Applied Physics Letters 109: 183105. Available: http://dx.doi.org/10.1063/1.4966217.en
dc.identifier.issn0003-6951en
dc.identifier.issn1077-3118en
dc.identifier.doi10.1063/1.4966217en
dc.identifier.urihttp://hdl.handle.net/10754/621843-
dc.description.abstractSemiconductors with bandgaps in the near- to mid-infrared can harvest solar light that is otherwise wasted by conventional single-junction solar cell architectures. In particular, colloidal quantum dots (CQDs) are promising materials since they are cost-effective, processed from solution, and have a bandgap that can be tuned into the infrared (IR) via the quantum size effect. These characteristics enable them to harvest the infrared portion of the solar spectrum to which silicon is transparent. To date, IR CQD solar cells have been made using a wasteful and complex sequential layer-by-layer process. Here, we demonstrate ∼1 eV bandgap solar-harvesting CQD films deposited in a single step. By engineering a fast-drying solvent mixture for metal iodide-capped CQDs, we deposited active layers greater than 200 nm in thickness having a mean roughness less than 1 nm. We integrated these films into infrared solar cells that are stable in air and exhibit power conversion efficiencies of 3.5% under illumination by the full solar spectrum, and 0.4% through a simulated silicon solar cell filter.en
dc.description.sponsorshipThis publication is based in part on the work supported by the Ontario Research Fund-Research Excellence Program, ORF #07-042.en
dc.publisherAIP Publishingen
dc.relation.urlhttp://dx.doi.org/10.1063/1.4966217en
dc.rightsArchived with thanks to Applied Physics Lettersen
dc.titleSingle-step colloidal quantum dot films for infrared solar harvestingen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentSolar and Photovoltaic Engineering Research Center (SPERC)en
dc.identifier.journalApplied Physics Lettersen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Electrical and Computer Engineering, University of Toronto, 10 King’s College Road, Toronto, Ontario M5S 3G4, Canadaen
kaust.authorAhmed, Ghada H.en
kaust.authorMohammed, Omar F.en
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