Shape-Tunable Charge Carrier Dynamics at the Interfaces between Perovskite Nanocrystals and Molecular Acceptors

Handle URI:
http://hdl.handle.net/10754/622463
Title:
Shape-Tunable Charge Carrier Dynamics at the Interfaces between Perovskite Nanocrystals and Molecular Acceptors
Authors:
Ahmed, Ghada H.; Liu, Jiakai; Parida, Manas R.; Banavoth, Murali ( 0000-0002-7806-2274 ) ; Bose, Riya; AlYami, Noktan; Hedhili, Mohamed N. ( 0000-0002-3624-036X ) ; Peng, Wei ( 0000-0002-7168-9795 ) ; Pan, Jun; Besong, Tabot M.D. ( 0000-0002-3572-1428 ) ; Bakr, Osman M. ( 0000-0002-3428-1002 ) ; Mohammed, Omar F. ( 0000-0001-8500-1130 )
Abstract:
Hybrid organic/inorganic perovskites have recently emerged as an important class of materials and have exhibited remarkable performance in photovoltaics. To further improve their device efficiency, an insightful understanding of the interfacial charge transfer (CT) process is required. Here, we report the first direct experimental observation of the tremendous effect that the shape of perovskite nanocrystals (NCs) has on interfacial CT in the presence of a molecular acceptor. A dramatic change in CT dynamics at the interfaces of three different NC shapes, spheres, platelets, and cubes, is recorded. Our results clearly demonstrate that the mechanism of CT is significantly affected by the NC shape. More importantly, the results demonstrate that complexation on the NC surface acts as an additional driving force not only to tune the CT dynamics but also to control the reaction mechanism at the interface. This observation opens a new venue for further developing perovskite NCs-based applications.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Solar and Photovoltaic Engineering Research Center (SPERC); Imaging and Characterization Core Lab
Citation:
Ahmed GH, Liu J, Parida MR, Murali B, Bose R, et al. (2016) Shape-Tunable Charge Carrier Dynamics at the Interfaces between Perovskite Nanocrystals and Molecular Acceptors. The Journal of Physical Chemistry Letters 7: 3913–3919. Available: http://dx.doi.org/10.1021/acs.jpclett.6b01910.
Publisher:
American Chemical Society (ACS)
Journal:
The Journal of Physical Chemistry Letters
Issue Date:
19-Sep-2016
DOI:
10.1021/acs.jpclett.6b01910
Type:
Article
ISSN:
1948-7185
Sponsors:
This work was supported by King Abdullah University of Science and Technology (KAUST) and the Islamic Development Bank (IDB). Also, part of this work was supported by Saudi Arabia Basic Industries Corporation (SABIC) Grant RGC/3/2470-01.
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division; Solar and Photovoltaic Engineering Research Center (SPERC)

Full metadata record

DC FieldValue Language
dc.contributor.authorAhmed, Ghada H.en
dc.contributor.authorLiu, Jiakaien
dc.contributor.authorParida, Manas R.en
dc.contributor.authorBanavoth, Muralien
dc.contributor.authorBose, Riyaen
dc.contributor.authorAlYami, Noktanen
dc.contributor.authorHedhili, Mohamed N.en
dc.contributor.authorPeng, Weien
dc.contributor.authorPan, Junen
dc.contributor.authorBesong, Tabot M.D.en
dc.contributor.authorBakr, Osman M.en
dc.contributor.authorMohammed, Omar F.en
dc.date.accessioned2017-01-02T09:28:32Z-
dc.date.available2017-01-02T09:28:32Z-
dc.date.issued2016-09-19en
dc.identifier.citationAhmed GH, Liu J, Parida MR, Murali B, Bose R, et al. (2016) Shape-Tunable Charge Carrier Dynamics at the Interfaces between Perovskite Nanocrystals and Molecular Acceptors. The Journal of Physical Chemistry Letters 7: 3913–3919. Available: http://dx.doi.org/10.1021/acs.jpclett.6b01910.en
dc.identifier.issn1948-7185en
dc.identifier.doi10.1021/acs.jpclett.6b01910en
dc.identifier.urihttp://hdl.handle.net/10754/622463-
dc.description.abstractHybrid organic/inorganic perovskites have recently emerged as an important class of materials and have exhibited remarkable performance in photovoltaics. To further improve their device efficiency, an insightful understanding of the interfacial charge transfer (CT) process is required. Here, we report the first direct experimental observation of the tremendous effect that the shape of perovskite nanocrystals (NCs) has on interfacial CT in the presence of a molecular acceptor. A dramatic change in CT dynamics at the interfaces of three different NC shapes, spheres, platelets, and cubes, is recorded. Our results clearly demonstrate that the mechanism of CT is significantly affected by the NC shape. More importantly, the results demonstrate that complexation on the NC surface acts as an additional driving force not only to tune the CT dynamics but also to control the reaction mechanism at the interface. This observation opens a new venue for further developing perovskite NCs-based applications.en
dc.description.sponsorshipThis work was supported by King Abdullah University of Science and Technology (KAUST) and the Islamic Development Bank (IDB). Also, part of this work was supported by Saudi Arabia Basic Industries Corporation (SABIC) Grant RGC/3/2470-01.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleShape-Tunable Charge Carrier Dynamics at the Interfaces between Perovskite Nanocrystals and Molecular Acceptorsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentSolar and Photovoltaic Engineering Research Center (SPERC)en
dc.contributor.departmentImaging and Characterization Core Laben
dc.identifier.journalThe Journal of Physical Chemistry Lettersen
kaust.authorAhmed, Ghada H.en
kaust.authorLiu, Jiakaien
kaust.authorParida, Manas R.en
kaust.authorBanavoth, Muralien
kaust.authorBose, Riyaen
kaust.authorAlYami, Noktanen
kaust.authorHedhili, Mohamed N.en
kaust.authorPeng, Weien
kaust.authorPan, Junen
kaust.authorBesong, Tabot M.D.en
kaust.authorBakr, Osman M.en
kaust.authorMohammed, Omar F.en
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