Local Versus Long‐Range Diffusion Effects of Photoexcited States on Radiative Recombination in Organic–Inorganic Lead Halide Perovskites

Radiative recombination in thin films of the archetypical, high‐performing perovskites CH(3)NH(3)PbBr(3) and CH(3)NH(3)PbI(3) shows localized regions of increased emission with dimensions ≈500 nm. Maps of the spectral emission line shape show narrower emission lines in high emission regions, which c...

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Detalles Bibliográficos
Autores principales: Vrućinić, Milan, Matthiesen, Clemens, Sadhanala, Aditya, Divitini, Giorgio, Cacovich, Stefania, Dutton, Sian E., Ducati, Caterina, Atatüre, Mete, Snaith, Henry, Friend, Richard H., Sirringhaus, Henning, Deschler, Felix
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2015
Materias:
Communications
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5115383/
https://www.ncbi.nlm.nih.gov/pubmed/27980979
http://dx.doi.org/10.1002/advs.201500136
Descripción
Sumario:Radiative recombination in thin films of the archetypical, high‐performing perovskites CH(3)NH(3)PbBr(3) and CH(3)NH(3)PbI(3) shows localized regions of increased emission with dimensions ≈500 nm. Maps of the spectral emission line shape show narrower emission lines in high emission regions, which can be attributed to increased order. Excited states do not diffuse out of high emission regions before they decay, but are decoupled from nearby regions, either by slow diffusion rates or energetic barriers. [Image: see text]

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