• Login
    View Item 
    •   Home
    • Research
    • Articles
    • View Item
    •   Home
    • Research
    • Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of KAUSTCommunitiesIssue DateSubmit DateThis CollectionIssue DateSubmit Date

    My Account

    Login

    Quick Links

    Open Access PolicyORCID LibguideTheses and Dissertations LibguideSubmit an Item

    Statistics

    Display statistics

    Carrier Extraction from Perovskite to Polymeric Charge Transport Layers Probed by Ultrafast Transient Absorption Spectroscopy.

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    jz-2019-02502r.R1_Proof_hi (1).pdf
    Size:
    1.001Mb
    Format:
    PDF
    Description:
    Accepted manuscript
    Download
    Type
    Article
    Authors
    Ugur, Esma cc
    Khan, Jafar Iqbal cc
    Aydin, Erkan cc
    Wang, Mingcong cc
    Kirkus, Mindaugas cc
    Neophytou, Marios cc
    McCulloch, Iain cc
    De Wolf, Stefaan cc
    Laquai, Frédéric cc
    KAUST Department
    Chemical Science Program
    KAUST Solar Center (KSC)
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2019-10-22
    Embargo End Date
    2020-10-22
    Permanent link to this record
    http://hdl.handle.net/10754/660113
    
    Metadata
    Show full item record
    Abstract
    The efficiency of state-of-the-art perovskite solar cells is limited by carrier recombination at defects and interfaces. Thus, understanding these losses and how to reduce them is the way forward toward the Shockley-Queisser limit. Here, we demonstrate that ultrafast transient absorption spectroscopy can directly probe hole extraction and recombination dynamics at perovskite/hole transport layer (HTL) interfaces. To illustrate this, we employed PDPP-3T as HTL because its ground-state absorption is at lower energy than the perovskite's photobleach, enabling direct monitoring of interfacial hole extraction and recombination. Moreover, by fitting the carrier dynamics using a diffusion model, we determined the carrier mobility. Afterwards, by varying the perovskite thickness, we distinguished between carrier diffusion and carrier extraction at the interface. Lastly, we prepared device-like structures, TiO2/perovskite/PDPP-3T stacks, and observed reduced carrier recombination in the perovskite. From PDPP-3T carrier dynamics, we deduced that hole extraction is one order faster than recombination of holes at the interface.
    Citation
    Ugur, E., Khan, J. I., Aydin, E., Wang, M., Kirkus, M., Neophytou, M., … Laquai, F. (2019). Carrier Extraction from Perovskite to Polymeric Charge Transport Layers Probed by Ultrafast Transient Absorption Spectroscopy. The Journal of Physical Chemistry Letters, 6921–6928. doi:10.1021/acs.jpclett.9b02502
    Sponsors
    This publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No: OSR2018-CARF/CCF-3079.
    Publisher
    American Chemical Society (ACS)
    Journal
    The journal of physical chemistry letters
    DOI
    10.1021/acs.jpclett.9b02502
    Additional Links
    https://pubs.acs.org/doi/10.1021/acs.jpclett.9b02502
    https://figshare.com/articles/Carrier_Extraction_from_Perovskite_to_Polymeric_Charge_Transport_Layers_Probed_by_Ultrafast_Transient_Absorption_Spectroscopy/10060328/files/18131651.pdf
    ae974a485f413a2113503eed53cd6c53
    10.1021/acs.jpclett.9b02502
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Chemical Science Program; Material Science and Engineering Program; KAUST Solar Center (KSC)

    entitlement

     
    DSpace software copyright © 2002-2022  DuraSpace
    Quick Guide | Contact Us | KAUST University Library
    Open Repository is a service hosted by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items. For anonymous users the allowed maximum amount is 50 search results.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.