Bright tunable luminescence of Sb3+ doping in zero-dimensional lead-free halide Cs3ZnCl5 perovskite crystals

Liu, Xiaoxia; Zhang, Weibing; Xu, Rui; Tu, Jiayu; Fang, Guoyong; Pan, Yuexiao

doi:10.1039/d2dt01243j

Cited by 9 publications

(8 citation statements)

References 47 publications

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“…This 0D perovskite matrix has recently emerged as a potential host for M III dopants, such as Sb 3 + (Supporting Information, Figure S3d). [39] The STE emission arises from the distortion of the lattice induced by Sb 3 + doping with the emission color changing from red to yellow (Supporting Information, Figure S3e). The maximal PL QY of about 34 % was achieved for ca.…”

Section: Cs 3 Zncl 5 Matrixmentioning

confidence: 99%

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Doping/Alloying Pathways to Lead‐Free Halide Perovskites with Ultimate Photoluminescence Quantum Yields

et al. 2022

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Tailored modifications of halide lead-free perovskites (LFPs) via doping/alloying with metal cations have been recognized as a promising pathway to highly efficient inorganic phosphors with photoluminescence (PL) quantum yields of up to 100 %. Such materials typically display selective sensitivity to UV light, a broad PL range, and long PL lifetimes as well as a unique compositional variability and stability-an ideal combination for many light-harvesting applications. This Minireview presents the state-of-the-art in doped LFPs, focusing on the reports published mostly in the last two to three years. We discuss the factors determining the efficiency and spectral parameters of the broadband PL of doped LFPs depending on the dopant and host matrix, both in micro-and nanocrystalline states, address the most relevant challenges this rapidly developing research area is facing, and outline the most promising concepts for further progress in this field.

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Section: Cs 3 Zncl 5 Matrixmentioning

confidence: 99%

“…2.3 % Sb 3+ ; the PL efficiency further increased due to a large lattice distortion induced by partial substitution of Cs + with Rb + and K + . [39] …”

Section: Other Emerging Lfp Host Matricesmentioning

confidence: 99%

Doping/Alloying Pathways to Lead‐Free Halide Perovskites with Ultimate Photoluminescence Quantum Yields

et al. 2022

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“…Diese 0D-Perowskitmatrix hat sich in jüngster Zeit als potenzieller Träger für M III -Dotierstoffe wie Sb 3 + erwiesen (Hintergrundinformationen, Abbildung S3d). [39] Die STE-Emission entsteht durch die Verzerrung des Gitters, die durch die Dotierung mit Sb 3 + hervorgerufen wird, wobei die Emissionsfarbe von Rot nach Gelb wechselt (Hintergrundinformationen, Abbildung S3e). Die maximale PL-QA von etwa 34 % wurde für ca.…”

Section: Cs 3 Zncl 5 -Matrixunclassified

“…2.3 % Sb 3 + erreicht, wobei die PL-Effizienz aufgrund einer großen Gitterverzerrung, die durch die teilweise Substitution von Cs + mit Rb + und K + induziert wird, weiter ansteigt. [39]…”

Section: Cs 3 Zncl 5 -Matrixunclassified

Dotierungs‐/Legierungswege zu bleifreien Halogenid‐Perowskiten mit ultimativen Photolumineszenz‐Quantenausbeuten

et al. 2022

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Maßgeschneiderte Modifizierungen bleifreier Halogenid-Perowskite (BHP) durch Dotierung/Legierung mit Metallkationen gelten als vielversprechender Weg zu hocheffizienten anorganischen Leuchtstoffen mit Photolumineszenz (PL)-Quantenausbeuten von bis zu 100 %. Solche Materialien weisen typischerweise eine selektive Empfindlichkeit gegen UV-Licht, einen breiten PL-Bereich, lange PL-Lebensdauern und eine einzigartige Variabilität und Stabilität der Zusammensetzung auf -eine ideale Kombination für viele Lichtsammelanwendungen. Dieser Kurzaufsatz stellt den Stand der Technik bei dotierten BHPs vor, mit dem Schwerpunkt auf Berichten aus den letzten 2-3 Jahren. Wir diskutieren die Faktoren, die die Effizienz und die spektralen Parameter der Breitband-PL von dotierten BHP abhängig von Dotierstoff und Wirtsmatrix im mikro-wie auch im nanokristallinen Zustand bestimmen, gehen auf die wichtigsten Herausforderungen in diesem sich rasch entwickelnden Forschungsbereich ein und skizzieren die vielversprechendsten Konzepte, um weitere Fortschritte in diesem Bereich zu erzielen.

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“…Excited-state and ground-state calculations undoubtedly produce different equilibrium structures and, thus, different energy-level diagrams. The difference is dependent on the strength of the electron–phonon interaction; − i.e., the stronger the electron–phonon interaction, the larger the difference. Therefore, excited-state energy-level diagrams are necessary to better understand the PL behaviors of doped phosphors, especially those with strong electron–phonon interactions.…”

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confidence: 99%

Excited-State Dopant–Host Energy-Level Alignment: Toward a Better Understanding of the Photoluminescence Behaviors of Doped Phosphors

Liu

Tang

et al. 2023

J. Phys. Chem. Lett.

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Luminescent materials, also known as phosphors, have been widely used for applications such as emissive displays, fluorescent lamps, light-emitting diodes, and X-ray scintillation detectors. The energy-level diagram of a phosphor is extremely important for understanding its photoluminescence behavior. Here, we demonstrate through a combined density functional theory and experimental study that excited-state energy-level alignment accounts for the photoluminescence behaviors much better than ground-state energy-level alignment. An efficient doped phosphor should exhibit a type I excited-state dopant−host energy-level alignment, regardless of whether its ground-state alignment is type I. A type II excited-state dopant−host energy-level alignment implies that exciton dissociation, resulting in photoluminescence quenching. Our results provide not only a better understanding of the photoluminescence behaviors of the reported phosphors but also critical guidance for designing prospective luminescent materials.

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Bright tunable luminescence of Sb³⁺ doping in zero-dimensional lead-free halide Cs₃ZnCl₅ perovskite crystals

Abstract: The lead-free zero-dimensional (0D) perovskite nanocrystals (NCs) with isolated octahedral structures have attracted considerable attentions due to their unique photoelectric properties such as highly efficient emissions with broadband features. A...

Cited by 9 publications

References 47 publications

Doping/Alloying Pathways to Lead‐Free Halide Perovskites with Ultimate Photoluminescence Quantum Yields

Doping/Alloying Pathways to Lead‐Free Halide Perovskites with Ultimate Photoluminescence Quantum Yields

Dotierungs‐/Legierungswege zu bleifreien Halogenid‐Perowskiten mit ultimativen Photolumineszenz‐Quantenausbeuten

Excited-State Dopant–Host Energy-Level Alignment: Toward a Better Understanding of the Photoluminescence Behaviors of Doped Phosphors

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