Insights into the local structure of dopants, doping efficiency, and luminescence properties of lanthanide-doped CsPbCl<sub>3</sub> perovskite nanocrystals

Ma, Jun; Chen, Ya-Meng; Zhang, Lu-Min; Guo, Shaoqiang; Liu, Jiandang; Li, Hong; Ye, Bangjiao; Li, Zhiyong; Zhou, Yang; Zhang, Binbin; Bakr, Osman M.; Zhang, Junying; Sun, Haijie

doi:10.1039/c9tc00237e

Cited by 83 publications

(79 citation statements)

References 67 publications

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“…In the FT,the relative decrease in the peak position compared with the actual interatomic distance could be attributed to the photoelectron phase shift. [16] In conclusion, all these results support that the doped Tb 3+ ions occupied In 3+ sites.…”

Section: Forschungsartikelsupporting

confidence: 62%

Incorporating Rare‐Earth Terbium(III) Ions into Cs₂AgInCl₆:Bi Nanocrystals toward Tunable Photoluminescence

et al. 2020

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The incorporation of impurity ions or doping is a promising method for controlling the electronic and optical properties and the structural stability of halide perovskite nanocrystals (NCs). Herein, we establish relationships between rare‐earth ions doping and intrinsic emission of lead‐free double perovskite Cs2AgInCl6 NCs to impart and tune the optical performances in the visible light region. Tb3+ ions were incorporated into Cs2AgInCl6 NCs and occupied In3+ sites as verified by both crystallographic analyses and first‐principles calculations. Trace amounts of Bi doping endowed the characteristic emission (5D4→7F6‐3) of Tb3+ ions with a new excitation peak at 368 nm rather than the single characteristic excitation at 290 nm of Tb3+. By controlling Tb3+ ions concentration, the emission colors of Bi‐doped Cs2Ag(In1−xTbx)Cl6 NCs could be continuously tuned from green to orange, through the efficient energy‐transfer channel from self‐trapped excitons to Tb3+ ions. Our study provides the salient features of the material design of lead‐free perovskite NCs and to expand their luminescence applications.

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Section: Forschungsartikelsupporting

confidence: 62%

Incorporating Rare‐Earth Terbium(III) Ions into Cs₂AgInCl₆:Bi Nanocrystals toward Tunable Photoluminescence

et al. 2020

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“…A long PL lifetime >2 ms was reported for the Laporte forbidden NIR Yb 3+ emission, suggesting incorporation of the dopants into the host lattice 22 . Local structure studies also confirm that Yb 3+ occupies the octahedral Pb 2+ site of CsPbCl 3 NCs 33 . Gamelin and coworkers reported añ 190% PL QY from not only NCs but also bulk-like thin films of Yb 3+ -doped CsPbCl 3…”

Section: Luminescence Via Spectral Shifting From Lanthanide-doped Cspmentioning

confidence: 70%

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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“…Recent studies have demonstrated successful B‐site doping using alkaline‐earth metal ions (Mg 2+ , Ba 2+ , Sr 2+ ), [ 14–17 ] transition metal ions (Cu 2+ , Cd 2+ , Ag + , Zn 2+ ), [ 18–21 ] metalloid ions (Sn 2+ , Bi 3+ ), [ 22–24 ] and lanthanide ions (Ce 3+ , Tb 3+ , Yb 3+ ). [ 25–27 ] Despite these advantages, dopants may also lead to negative effects on the properties of NCs. Begum et al.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Blue‐Emitting CsPbBr₃ Perovskite Nanocrystals through Neodymium Doping

et al. 2020

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Colloidal CsPbX 3 (X = Br, Cl, and I) perovskite nanocrystals exhibit tunable bandgaps over the entire visible spectrum and high photoluminescence quantum yields in the green and red regions. However, the lack of highly efficient blue-emitting perovskite nanocrystals limits their development for optoelectronic applications. Herein, neodymium (III) (Nd 3+) doped CsPbBr 3 nanocrystals are prepared through the ligand-assisted reprecipitation method at room temperature with tunable photoemission from green to deep blue. A blue-emitting nanocrystal with a central wavelength at 459 nm, an exceptionally high photoluminescence quantum yield of 90%, and a spectral width of 19 nm is achieved. First principles calculations reveal that the increase in photoluminescence quantum yield upon doping is driven by an enhancement of the exciton binding energy due to increased electron and hole effective masses and an increase in oscillator strength due to shortening of the Pb-Br bond. Putting these results together, an all-perovskite white light-emitting diode is successfully fabricated, demonstrating that B-site composition engineering is a reliable strategy to further exploit the perovskite family for wider optoelectronic applications.

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Insights into the local structure of dopants, doping efficiency, and luminescence properties of lanthanide-doped CsPbCl₃ perovskite nanocrystals

Abstract: Our results greatly deepen the understanding of the structural and photophysical properties of lanthanide-doped lead halide perovskite NCs.

Cited by 83 publications

References 67 publications

Incorporating Rare‐Earth Terbium(III) Ions into Cs₂AgInCl₆:Bi Nanocrystals toward Tunable Photoluminescence

Incorporating Rare‐Earth Terbium(III) Ions into Cs₂AgInCl₆:Bi Nanocrystals toward Tunable Photoluminescence

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

Highly Efficient Blue‐Emitting CsPbBr₃ Perovskite Nanocrystals through Neodymium Doping

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Insights into the local structure of dopants, doping efficiency, and luminescence properties of lanthanide-doped CsPbCl3 perovskite nanocrystals

Abstract: Our results greatly deepen the understanding of the structural and photophysical properties of lanthanide-doped lead halide perovskite NCs.

Cited by 83 publications

References 67 publications

Incorporating Rare‐Earth Terbium(III) Ions into Cs2AgInCl6:Bi Nanocrystals toward Tunable Photoluminescence

Incorporating Rare‐Earth Terbium(III) Ions into Cs2AgInCl6:Bi Nanocrystals toward Tunable Photoluminescence

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

Highly Efficient Blue‐Emitting CsPbBr3 Perovskite Nanocrystals through Neodymium Doping

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Insights into the local structure of dopants, doping efficiency, and luminescence properties of lanthanide-doped CsPbCl₃ perovskite nanocrystals

Incorporating Rare‐Earth Terbium(III) Ions into Cs₂AgInCl₆:Bi Nanocrystals toward Tunable Photoluminescence

Incorporating Rare‐Earth Terbium(III) Ions into Cs₂AgInCl₆:Bi Nanocrystals toward Tunable Photoluminescence

Highly Efficient Blue‐Emitting CsPbBr₃ Perovskite Nanocrystals through Neodymium Doping