Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

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

    Interfacial engineering of electron transport layer using Caesium Iodide for efficient and stable organic solar cells

    Access Status
    Fulltext not available
    Authors
    Upama, M.
    Elumalai, Naveen Kumar
    Mahmud, M.
    Wright, M.
    Wang, D.
    Xu, C.
    Haque, F.
    Chan, K.
    Uddin, A.
    Date
    2017
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Upama, M. and Elumalai, N.K. and Mahmud, M. and Wright, M. and Wang, D. and Xu, C. and Haque, F. et al. 2017. Interfacial engineering of electron transport layer using Caesium Iodide for efficient and stable organic solar cells. Applied Surface Science. 416: pp. 834-844.
    Source Title
    Applied Surface Science
    DOI
    10.1016/j.apsusc.2017.04.164
    ISSN
    0169-4332
    URI
    http://hdl.handle.net/20.500.11937/73878
    Collection
    • Curtin Research Publications
    Abstract

    Polymer solar cells (PSCs) have gained immense research interest in the recent years predominantly due to low-cost, solution process-ability, and facile device fabrication. However, achieving high stability without compromising the power conversion efficiency (PCE) serves to be an important trade-off for commercialization. In line with this, we demonstrate the significance of incorporating a CsI/ZnO bilayer as electron transport layer (ETL) in the bulk heterojunction PSCs employing low band gap polymer (PTB7) and fullerene (PC71BM) as the photo-active layer. The devices with CsI/ZnO interlayer exhibited substantial enhancement of 800% and 12% in PCE when compared to the devices with pristine CsI and pristine ZnO as ETL, respectively. Furthermore, the UV and UV-ozone induced degradation studies revealed that the devices incorporating CsI/ZnO bilayer possess excellent decomposition stability (∼23% higher) over the devices with pristine ZnO counterparts. The incorporation of CsI between ITO and ZnO was found to favorably modify the energy-level alignment at the interface, contributing to the charge collection efficiency as well as protecting the adjacent light absorbing polymer layers from degradation. The mechanism behind the improvement in PCE and stability is analyzed using the electrochemical impedance spectroscopy and dark I–V characteristics.

    Related items

    Showing items related by title, author, creator and subject.

    • Roll-to-Roll Sputter Coating of Aluminum Cathodes for Large-Scale Fabrication of Organic Photovoltaic Devices
      Griffith, M.; Cooling, N.; Vaughan, B.; O'Donnell, Kane; Al-Mudhaffer, M.; Al-Ahmad, A.; Noori, M.; Almyahi, F.; Belcher, W.; Dastoor, P. (2015)
      We report the demonstration of sputter-coated aluminum contacts directly onto P3HT:PCBM organic photovoltaic devices using a R2R process without detrimentally influencing the performance of the devices. The final sputtered ...
    • Enhanced electron transport enables over 12% efficiency by interface engineering of non-fullerene organic solar cells
      Upama, M.; Elumalai, Naveen Kumar; Mahmud, M.; Xu, C.; Wang, D.; Wright, M.; Uddin, A. (2018)
      Organic solar cells have attracted much attention in the recent years due to their many intrinsic advantages, such as, light weight, flexibility, low-cost, solution processing, and facile device fabrication. In this study, ...
    • Organic solar cells with near 100% efficiency retention after initial burn-in loss and photo-degradation
      Upama, M.; Elumalai, Naveen Kumar; Mahmud, M.; Sun, H.; Wang, D.; Chan, K.; Wright, M.; Xu, C.; Uddin, A. (2017)
      In this article, we attempt to demonstrate a way of tackling one of the biggest challenges in the path of commercialization of organic solar cells, the initial photo-degradation of the cells known as “burn-in”. The “burn-in” ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.