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Manipulating the Net Radiative Recombination Rate in Lead Halide Perovskite Films by Modification of Light Outcoupling.

Author information

Affiliations

  • 1. IEK-5 Photovoltaik, Forschungszentrum Jülich GmbH , 52425 Jülich, Germany.
      Authors
    • Staub F 1
    • Kirchartz T 1
    • Bittkau K 1
    • Rau U 1
    (4 authors)

ORCIDs linked to this article

The Journal of Physical Chemistry Letters, 04 Oct 2017, 8(20):5084-5090
https://doi.org/10.1021/acs.jpclett.7b02224 PMID: 28976758 

Abstract 

Photon recycling is a fundamental physical process that becomes especially important for photovoltaic devices that operate close to the radiative limit. This implies that the externally measured radiative decay rate deviates from the internal radiative recombination rate of the material. In the present Letter, the probability of photon recycling in organic lead halide perovskite films is manipulated by modifying the underlying layer stacks. We observe recombination kinetics by time-resolved photoluminescence that is controlled by the optical design of the chosen layer structure. Quantitative simulations of decay rates and emission spectra show excellent agreement with experimental results if we assume that the internal bimolecular recombination coefficient is ∼66% radiative.

Full text links 

Read article at publisher's site: https://doi.org/10.1021/acs.jpclett.7b02224

Read article for free, from open access legal sources, via Unpaywall: http://juser.fz-juelich.de/record/838206/files/jz-2017-02224z.pdfUnpaywall

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Funding 

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Deutsche Forschungsgemeinschaft (2)