Yb3+ and Yb3+/Er3+ doping for near-infrared emission and improved stability of CsPbCl3 nanocrystals

Zhang, Xiangtong; Zhang, Yu; Zhang, Xiaoyu; Yin, Wenxu; Wang, Yu; Wang, Hua; Lu, Min; Li, Zhiyang; Gu, Zhiyong; Yu, William W.

doi:10.1039/c8tc03957g

Cited by 105 publications

(71 citation statements)

References 45 publications

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“…In a different direction from quantum cutting for improving the efficiency of Si solar cells, lanthanide doping has been reported to increase the efficiency and stability of perovskite solar cells 38,[43][44][45] . Ln 3+ doping has been reported to reduce lattice and surface defects of both NCs and bulk-like perovskite thin films 32,38 .…”

Section: Perovskite Solar Cellsmentioning

confidence: 99%

Lanthanide doping in metal halide perovskite nanocrystals: spectral shifting, quantum cutting and optoelectronic applications

et al. 2020

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Lanthanides have been widely explored as optically active dopants in inorganic crystal lattices, which are often insulating in nature. Doping trivalent lanthanide (Ln 3+) into traditional semiconductor nanocrystals, such as CdSe, is challenging because of their tetrahedral coordination. Interestingly, CsPbX 3 (X = Cl, Br, I) perovskite nanocrystals provide the octahedral coordination suitable for Ln 3+ doping. Over the last two years, tremendous success has been achieved in doping Ln 3+ into CsPbX 3 nanocrystals, combining the excellent optoelectronic properties of the host with the f-f electronic transitions of the dopants. For example, the efficient quantum cutting phenomenon in Yb 3+-doped CsPb(Cl,Br) 3 nanocrystals yields a photoluminescence quantum yield close to 200%. Other approaches of Ln 3+ doping and codoping have enabled promising proof-of-principle demonstration of solid-state lighting and solar photovoltaics. In this perspective article, we highlight the salient features of the material design (including doping in Pb-free perovskites), optical properties and potential optoelectronic applications of lanthanide-doped metal halide perovskite nanocrystals. While review articles on doping different metal ions into perovskite nanocrystals are present, the present review-type article is solely dedicated to lanthanide-doped metal halide perovskite nanocrystals.

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Section: Perovskite Solar Cellsmentioning

confidence: 99%

Lanthanide doping in metal halide perovskite nanocrystals: spectral shifting, quantum cutting and optoelectronic applications

et al. 2020

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“…Zhang et al also observed Er 3+ ‐related emission only for Yb 3+ , Er 3+ codoped CsPbCl 3 PNCs. [ 128 ] Milstein et al further investigated the quantum cutting effect in Yb 3+ ‐doped CsPb(Cl 1− x Br x ) 3 PNCs in more detail. [ 125 ] Using the anion exchange reaction, they obtained a number of PNC stoichiometries to determine the absorption band threshold position for quantum cutting.…”

Section: Broadly Tunable Emission Toward Nirmentioning

confidence: 99%

Halide Perovskite Nanocrystal Emitters

Liu

Grandhi

Matta

et al. 2021

Advanced Photonics Research

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The increasing attention on halide perovskite nanocrystals (PNCs) stems from their outstanding optoelectronic properties, especially the intriguing photoluminescence (PL) features. The high photoluminescence quantum yields (up to unity) of PNCs, and the tunability of their optical bandgaps by composition engineering and quantum confinement effects, account for the demonstrated great potential in several optoelectronic applications, such as light‐emitting diodes (LEDs), phosphors, lasers, and photodetectors. However, despite the rapid growth of this research field, several questions are still left unanswered and there is room for further improving the luminescence performance, particularly for emerging lead‐free PNC compositions. Herein, the recent advances in the light emission phenomena in PNCs are discussed. A special focus is given to the correlation between PL and phase transition, the dual‐color emission, the tunability of the PL toward near‐infrared (NIR), and the thermal quenching effect. The key research findings on LEDs, the major application of perovskite‐based nanoscale emitters, are also outlined. Finally, the view on the most urgent challenges to be addressed is provided, with the intent of promoting a more profound understanding of PNC emission‐related phenomena in the future.

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“…Figure S9a shows that two strong peaks of CsPbCl 3 @Cu-BDC are located at about 138.9 eV (4f 7/2 ) and about 143.8 eV (4f 5/2 ) with a spin-orbit splitting energy of 4.9 eV which characteristic of Pb 2+ states, and no metallic state of Pb 0 is observed [26], and the 3d spectra of Cs showed there is only one type of Cs, and two signature peaks at 724.2 eV and 738.2 eV are Cs 3d 5/2 and 3d 3/2 , respectively [27,28]. The core levels of Cl 2p in Figure S9a indicated the binding energy peaks at 199.1 eV and 197.8 eV are consistent with Cl 2p 1/2 and 2p 3/2 [29]. For CsPbBr 3 @Cu-BDC which shown in Figure S9b, can see the core levels of Br 3d binding energy are 77.3 eV for 3d 3/2 and 74.9 eV for 3d 5/2 suggests the Br − state [30], meantime, the 143.3 eV for Pb 4f 5/2 , 138.4 eV for Pb 4f 7/2 , the 740.6 eV for Cs 3d 3/2 and 726.6 eV for Cs 3d 5/2 .…”

Section: Resultsmentioning

confidence: 99%

MOF-Confined Sub-2 nm Stable CsPbX3 Perovskite Quantum Dots

Liu

Wen

et al. 2019

Nanomaterials

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The metal halide with a perovskite structure has attracted significant attention due to its defect-tolerant photophysics and optoelectronic features. In particular, the all-inorganic metal halide perovskite quantum dots have potential for development in future applications. Sub-2 nm CsPbX3 (X = Cl, Br, and I) perovskite quantum dots were successfully fabricated by a MOF-confined strategy with a facile and simple route. The highly uniform microporous structure of MOF effectively restricted the CsPbX3 quantum dots aggregation in a synthetic process and endowed the obtained sub-2 nm CsPbX3 quantum dots with well-dispersed and excellent stability in ambient air without a capping agent. The photoluminescence emission spectra and lifetimes were not decayed after 60 days. The CsPbX3 quantum dots maintained size distribution stability in the air without any treatment. Because of the quantum confinement effect of CsPbX3 quantum dots, the absorption and photoluminescence (PL) emission peak were blue shifted to shorter wavelengths compare with bulk materials. Furthermore, this synthetic strategy provides a novel method in fabricating ultra-small photoluminescence quantum dots.

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Yb³⁺ and Yb³⁺/Er³⁺ doping for near-infrared emission and improved stability of CsPbCl₃ nanocrystals

Cited by 105 publications

References 45 publications

Lanthanide doping in metal halide perovskite nanocrystals: spectral shifting, quantum cutting and optoelectronic applications

Lanthanide doping in metal halide perovskite nanocrystals: spectral shifting, quantum cutting and optoelectronic applications

Halide Perovskite Nanocrystal Emitters

MOF-Confined Sub-2 nm Stable CsPbX3 Perovskite Quantum Dots

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