Solid-State Colloidal CuInS2 Quantum Dot Solar Bulk Heterojunctions

Colloidal copper indium sulfide (CIS) nanocrystals (NCs) are Pb- and Cd-free alternatives for use as absorbers in quantum dot solar cells. In a heterojunction with TiO2, non-annealed ligand-exchanged CIS NCs form solar cells yielding a meager power conversion efficiency (PCE) of 0.15%, with photocur...

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Detalles Bibliográficos
Autores: So, David, Pradhan, Santanu, Konstantatos, Gerasimos
Tipo de recurso: artículo
Fecha de publicación:2016
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/100673
Acceso en línea:https://hdl.handle.net/2117/100673
Access Level:acceso abierto
Palabra clave:Solar cells
quantum dot
Cèl·lules solars
Àrees temàtiques de la UPC::Física
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spelling Solid-State Colloidal CuInS2 Quantum Dot Solar Bulk HeterojunctionsSo, DavidPradhan, SantanuKonstantatos, GerasimosSolar cellsquantum dotCèl·lules solarsÀrees temàtiques de la UPC::FísicaColloidal copper indium sulfide (CIS) nanocrystals (NCs) are Pb- and Cd-free alternatives for use as absorbers in quantum dot solar cells. In a heterojunction with TiO2, non-annealed ligand-exchanged CIS NCs form solar cells yielding a meager power conversion efficiency (PCE) of 0.15%, with photocurrents plummeting far below predicted values from absorption. Decreasing the amount of zinc during post-treatment leads to improved mobility but marginally improves device performance (PCE = 0.30%). By incorporating CIS into a porous TiO2 network, we saw an overall drastic improvement in device performance, reaching PCEs of 1.16%, mainly from an increase in short circuit current density (Jsc) and fill factor (FF) and a 10-fold increase in internal quantum efficiency (IQE). We have determined that by moving from a bilayer to a bulk heterojunction architecture, we have reduced the trap-assisted recombination as seen in changes in the ideality factor, the intensity dependence of the photocurrent and transient photocurrent (TPC) and photovoltage (TPV) characteristics.Peer ReviewedRoyal Society of Chemistry20162016-08-2920172017-02-08journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/100673reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengEuropean Commission http://dx.doi.org/10.13039/100011102 Seventh Framework Programme 316616 The Energy Storyopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1006732026-05-27T15:37:01Z
dc.title.none.fl_str_mv Solid-State Colloidal CuInS2 Quantum Dot Solar Bulk Heterojunctions
title Solid-State Colloidal CuInS2 Quantum Dot Solar Bulk Heterojunctions
spellingShingle Solid-State Colloidal CuInS2 Quantum Dot Solar Bulk Heterojunctions
So, David
Solar cells
quantum dot
Cèl·lules solars
Àrees temàtiques de la UPC::Física
title_short Solid-State Colloidal CuInS2 Quantum Dot Solar Bulk Heterojunctions
title_full Solid-State Colloidal CuInS2 Quantum Dot Solar Bulk Heterojunctions
title_fullStr Solid-State Colloidal CuInS2 Quantum Dot Solar Bulk Heterojunctions
title_full_unstemmed Solid-State Colloidal CuInS2 Quantum Dot Solar Bulk Heterojunctions
title_sort Solid-State Colloidal CuInS2 Quantum Dot Solar Bulk Heterojunctions
dc.creator.none.fl_str_mv So, David
Pradhan, Santanu
Konstantatos, Gerasimos
author So, David
author_facet So, David
Pradhan, Santanu
Konstantatos, Gerasimos
author_role author
author2 Pradhan, Santanu
Konstantatos, Gerasimos
author2_role author
author
dc.subject.none.fl_str_mv Solar cells
quantum dot
Cèl·lules solars
Àrees temàtiques de la UPC::Física
topic Solar cells
quantum dot
Cèl·lules solars
Àrees temàtiques de la UPC::Física
description Colloidal copper indium sulfide (CIS) nanocrystals (NCs) are Pb- and Cd-free alternatives for use as absorbers in quantum dot solar cells. In a heterojunction with TiO2, non-annealed ligand-exchanged CIS NCs form solar cells yielding a meager power conversion efficiency (PCE) of 0.15%, with photocurrents plummeting far below predicted values from absorption. Decreasing the amount of zinc during post-treatment leads to improved mobility but marginally improves device performance (PCE = 0.30%). By incorporating CIS into a porous TiO2 network, we saw an overall drastic improvement in device performance, reaching PCEs of 1.16%, mainly from an increase in short circuit current density (Jsc) and fill factor (FF) and a 10-fold increase in internal quantum efficiency (IQE). We have determined that by moving from a bilayer to a bulk heterojunction architecture, we have reduced the trap-assisted recombination as seen in changes in the ideality factor, the intensity dependence of the photocurrent and transient photocurrent (TPC) and photovoltage (TPV) characteristics.
publishDate 2016
dc.date.none.fl_str_mv 2016
2016-08-29
2017
2017-02-08
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/100673
url https://hdl.handle.net/2117/100673
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv European Commission http://dx.doi.org/10.13039/100011102 Seventh Framework Programme 316616 The Energy Story
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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