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Blue-Emitting Cs(Pb,Cd)Br3 Nanocrystals Resistant to Electric Field-Induced Ion Segregation.
Anoshkin, Sergey S; Sapozhnikova, Elizaveta V; Feng, Yibo; Ju, Yangyang; Pavlov, Alexander; Polozkov, Roman G; Yulin, Alexey; Zhong, Haizheng; Pushkarev, Anatoly P.
Afiliación
  • Anoshkin SS; School of Physics and Engineering, ITMO University, Kronverksky Pr. 49, St. Petersburg 197101, Russia.
  • Sapozhnikova EV; School of Physics and Engineering, ITMO University, Kronverksky Pr. 49, St. Petersburg 197101, Russia.
  • Feng Y; Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Materials Science and Engineering, Beijing Institute of Technology, 5 Zhongguancun South Street, Beijing 100081, China.
  • Ju Y; Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, Advanced Research Institute of Multidisciplinary Sciences, Beijing Institute of Technology, Beijing 100081, China.
  • Pavlov A; St. Petersburg Academic University, St. Petersburg 194021, Russia.
  • Polozkov RG; Peter the Great St.Petersburg Polytechnic University, St.Petersburg 195251, Russia.
  • Yulin A; St. Petersburg Academic University, St. Petersburg 194021, Russia.
  • Zhong H; School of Physics and Engineering, ITMO University, Kronverksky Pr. 49, St. Petersburg 197101, Russia.
  • Pushkarev AP; Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Materials Science and Engineering, Beijing Institute of Technology, 5 Zhongguancun South Street, Beijing 100081, China.
ACS Appl Mater Interfaces ; 16(9): 11656-11664, 2024 Mar 06.
Article en En | MEDLINE | ID: mdl-38407031
ABSTRACT
High-performance solution-processed perovskite light-emitting diodes (PeLEDs) have emerged as a good alternative to the well-established technology of epitaxially grown AIIIBV semiconductor alloys. Colloidal cesium lead halide perovskite nanocrystals (CsPbX3 NCs) exhibit room-temperature excitonic emission that can be spectrally tuned across the entire visible range by varying the content of different halogens at the X-site. Therefore, they present a promising platform for full color display manufacturing. Engineering of highly efficient PeLEDs based on bromide and iodide perovskite NCs emitting green and red light, respectively, does not face major challenges except low operational stability of the devices. Meanwhile, mixed-halide counterparts demonstrating blue luminescence suffer from the electric field-induced phase separation (ion segregation) phenomenon described by the rearrangement (demixing) of mobile halide ions in the crystal lattice. This phenomenon results in an undesirable temporal redshift of the electroluminescence spectrum. However, to realize spectral tuning and, at the same time, address the issue of ion segregation less mobile Cd2+ ion could be introduced in the lattice at Pb2+-site that leads to the band gap opening. Herein, we report an original synthesis of CsPb0.88Cd0.12Br3 perovskite NCs and study their structural and optical properties, in particular electroluminescence. Multilayer PeLEDs based on the obtained NCs exhibit single-peak emission centered at 485 nm along with no noticeable change in the spectral line shape for 30 min which is a significant improvement of the device performance.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: Rusia Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: Rusia Pais de publicación: Estados Unidos