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Impact of Cation Multiplicity on Halide Perovskite Defect Densities and Solar Cell Voltages

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10422142" target="_blank" >RIV/00216208:11320/20:10422142 - isvavai.cz</a>

  • Alternative codes found

    RIV/68407700:21230/20:00345155 RIV/68378271:_____/20:00541706

  • Result on the web

    <a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=7E09P2-B.l" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=7E09P2-B.l</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1021/acs.jpcc.0c08193" target="_blank" >10.1021/acs.jpcc.0c08193</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Impact of Cation Multiplicity on Halide Perovskite Defect Densities and Solar Cell Voltages

  • Original language description

    Metal-halide perovskites feature very low deep-defect densities, thereby enabling high operating voltages at the solar cell level. Here, by precise extraction of their absorption spectra, we find that the low deep-defect density is unaffected when cations such as Cs+ and Rb+ are added during the perovskite synthesis. By comparing single crystals and polycrystalline thin films of methylammonium lead iodide/bromide, we find these defects to be predominantly localized at surfaces and grain boundaries. Furthermore, generally, for the most important photovoltaic materials, we demonstrate a strong correlation between their Urbach energy and open-circuit voltage deficiency at the solar cell level. Through external quantum yield photoluminescence efficiency measurements, we explain these results as a consequence of nonradiative open-circuit voltage losses in the solar cell. Finally, we define practical power conversion efficiency limits of solar cells by taking into account the Urbach energy.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2020

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Physical Chemistry C

  • ISSN

    1932-7447

  • e-ISSN

  • Volume of the periodical

    50

  • Issue of the periodical within the volume

    124

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    7

  • Pages from-to

    27333-27339

  • UT code for WoS article

    000608876900008

  • EID of the result in the Scopus database

    2-s2.0-85097802922