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Large-Area Nanocrystalline Caesium Lead Chloride Thin Films: A Focus on the Exciton Recombination Dynamics.
Falsini, Naomi; Calisi, Nicola; Roini, Giammarco; Ristori, Andrea; Biccari, Francesco; Scardi, Paolo; Barri, Chiara; Bollani, Monica; Caporali, Stefano; Vinattieri, Anna.
Afiliación
  • Falsini N; Department of Physics and Astronomy, University of Florence, Via G. Sansone 1, I-50019 Sesto Fiorentino, Italy.
  • Calisi N; European Laboratory for Non-linear Spectroscopy (LENS), University of Florence, Via N. Carrara 1, I-50019 Sesto Fiorentino, Italy.
  • Roini G; Department of Industrial Engineering (DIEF), University of Florence, Via S. Marta 3, I-50139 Florence, Italy.
  • Ristori A; INSTM-Interuniversity National Consortium for Material Science and Technology, Via Giusti 9, I-50121 Florence, Italy.
  • Biccari F; Department of Information Engineering, University of Brescia, Via Branze, 38, I-25123 Brescia, Italy.
  • Scardi P; European Laboratory for Non-linear Spectroscopy (LENS), University of Florence, Via N. Carrara 1, I-50019 Sesto Fiorentino, Italy.
  • Barri C; Department of Physics and Astronomy, University of Florence, Via G. Sansone 1, I-50019 Sesto Fiorentino, Italy.
  • Bollani M; European Laboratory for Non-linear Spectroscopy (LENS), University of Florence, Via N. Carrara 1, I-50019 Sesto Fiorentino, Italy.
  • Caporali S; Department of Civil, Environmental and Mechanical Engineering, University of Trento, Via Mesiano 77, I-38123 Trento, Italy.
  • Vinattieri A; Institute of Photonic and Nanotechnology (IFN)-CNR, LNESS Laboratory, Via Anzani 42, I-20133 Como, Italy.
Nanomaterials (Basel) ; 11(2)2021 Feb 09.
Article en En | MEDLINE | ID: mdl-33572135
Caesium lead halide perovskites were recently demonstrated to be a relevant class of semiconductors for photonics and optoelectronics. Unlike CsPbBr3 and CsPbI3, the realization of high-quality thin films of CsPbCl3, particularly interesting for highly efficient white LEDs when coupled to converting phosphors, is still a very demanding task. In this work we report the first successful deposition of nanocrystalline CsPbCl3 thin films (70-150 nm) by radio frequency magnetron sputtering on large-area substrates. We present a detailed investigation of the optical properties by high resolution photoluminescence (PL) spectroscopy, resolved in time and space in the range 10-300 K, providing quantitative information concerning carriers and excitons recombination dynamics. The PL is characterized by a limited inhomogeneous broadening (~15 meV at 10 K) and its origin is discussed from detailed analysis with investigations at the micro-scale. The samples, obtained without any post-growth treatment, show a homogeneous PL emission in spectrum and intensity on large sample areas (several cm2). Temperature dependent and time-resolved PL spectra elucidate the role of carrier trapping in determining the PL quenching up to room temperature. Our results open the route for the realization of large-area inorganic halide perovskite films for photonic and optoelectronic devices.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanomaterials (Basel) Año: 2021 Tipo del documento: Article País de afiliación: Italia Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanomaterials (Basel) Año: 2021 Tipo del documento: Article País de afiliación: Italia Pais de publicación: Suiza