Environmentally friendly CsPbBr3 QDs multicomponent glass with super-stability for optoelectronic devices and up-converted lasing

Li, Shasha; Nie, Lanjian; Ma, Shengli; Yao, Guanpeng; Zeng, Fanming; Wang, Xinyu; Sun, Chun-Yi; Hu, Guangxu; Su, Zhong‐Min

doi:10.1016/j.jeurceramsoc.2020.02.056

Cited by 35 publications

(20 citation statements)

References 41 publications

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“…54-0752) (Figure 1a and Table S6). 12 Further modifications of the S7). These results could be attributed to the different Cs:Pb stoichiometric ratio, the establishment of a Csrich environment, and the rhombohedral Cs 4 PbBr 6 QD selfcrystallization in glass (Table S8).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…29,30 QDs (Figure 2e). 12 Both of these perovskite QD deposits were smaller than those previously reported in the literature. Perovskite QDs displayed uniform spherical distribution due to the limitation of the glass matrix.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…16 To investigate the suitable PL excitation wavelengths of the perovskite QDs in glass, the PL excitation spectra were monitored at the emission wavelengths of 503 (R-CPB-4) and 519 (C-CPB-2) nm (Figure 3b). 12 A wide excitation wavelength range (365−475 nm) was found to be suitable for generating the PL effects. Based on the above results, the generation of Cs 4 PbBr 6 and CsPbBr 3 QDs, having a size of the same order as that of the exciton Bohr radius, led to a blue-shift in fluorescence and the quantum size effect (Figure S6).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Ultrastable Zero-Dimensional Cs₄PbBr₆ Perovskite Quantum Dot Glass

Liu

et al. 2020

ACS Sustainable Chem. Eng.

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The instability of all-inorganic perovskites and poor understanding of the photoluminescence mechanisms have hindered their practical applications. While a large body of work on 3-D perovskite phases is available in the literature, the promising zero-dimensional (0-D) phase perovskite materials are still poorly understood. Herein, we report a new synthesis method for the production of 0-D Cs4PbBr6 perovskite quantum dots (QDs) in glass using a combination of Cs2CO3 concentration and heat-treatment temperature optimization. The differences in structure, morphology, and photoluminescence (PL) between the 0-D Cs4PbBr6 QDs and the 3-D CsPbBr3 QDs in glass were studied in detail. Cs4PbBr6 QD glass with high transmittance displayed a blue-shift PL emission centered at 503 nm, a narrow full width at half-maximum (fwhm, ∼20 nm), a high photoluminescence quantum yield (PLQY, ∼22%), and excellent long-term stability, thereby, advancing the study of these materials. It was demonstrated that Cs4PbBr6 displayed unique luminescent properties in correlation with the intrinsic defect states in the mid-band gap.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

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Ultrastable Zero-Dimensional Cs₄PbBr₆ Perovskite Quantum Dot Glass

Liu

et al. 2020

ACS Sustainable Chem. Eng.

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“…Hot-injection method is commonly used to synthesize perovskite, and this method is also suitable for doping of RE ions into perovskite, such as all-inorganic lead halide perovskite, lead lead-free halide perovskite. [61][62][63] The typical steps of hot-injection method are shown in Figure 3A, usually, Pb source (such as PbCl 2 ) and RE source (such as RECl 3 ) were dissolved into a mixed organic solution…”

Section: Hot-injection Methodsmentioning

confidence: 99%

“…Liu et al synthesized Bi 3+ , Tb 3+ codoped Cs 2 AgInCl 6 NCs via this method. [63] By controlling the concentration of Tb 3+ ions, the emission colors can be continuously tuned from green to orange through efficient energy transfer from selftrapped excitons to Tb 3+ ions. Via a hot injection method, Yb 3+ doped lead-free double perovskite Cs 2 AgBiX 6 (X = Cl − , Br − ) NCs were reported by Chen's group.…”

Section: Hot-injection Methodsmentioning

confidence: 99%

Rare earth doping in perovskite luminescent nanocrystals and photoelectric devices

2021

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Halide perovskites have shown great promise in optoelectronics and photovoltaics owing to their outstanding photoelectrical properties. However, their inherent shortcomings, such as lack of near‐infrared (NIR) photoluminescence (PL), instability and low efficiency, limit their practical applications. It is notable that doping and ion substitution represent effective strategies for tailoring the optoelectronic properties and stabilities of perovskite nanocrystals (NCs). Rare earth (RE) ions exhibit unique electronic and optical properties; the combination of lead halide perovskite and RE ions can combine the excellent optoelectronic properties of the host with the f‐f electronic transitions of the dopants and promote the further development of perovskite in the field of optoelectronics. For example, the efficient quantum cutting phenomenon in Yb3+‐doped CsPb(Cl/Br)3 NCs yields a photoluminescence quantum yield (PLQY) close to 200%, which have enabled promising proof‐of‐principle demonstration of solar photovoltaics. This review comprehensively summarizes the crystal structure, synthesis strategy, and applications of RE‐doped halide perovskites. We systematically discussed the challenges of RE ions in halide perovskite photovoltaic and light‐emitting devices, which provided a leading direction for the development of efficient and stable perovskite photovoltaic devices in the future.

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Spectral Tuning, Stabilities under External Exposures, and Spontaneous Enhancement of Emission Intensity in Grown‐into‐Glass All‐Inorganic Metal Halide Perovskite Nanocrystals

Kang

Yang

et al. 2022

Laser & Photonics Reviews

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Herein, the grown-into-glass (GIG) CsPbBr 3 :Ln 3+ (Ln = La, Lu) nanocrystals (NCs) are designed and fabrictaed using an in situ nanocrystallization method. It is shown that a substitution of Pb 2+ sites with Ln 3+ ions leads to a blueshift of emission position induced by an increase of the bandgap of CsPbBr 3 . Additionally, the GIG-samples are revealed to feature excellent photoluminescent (PL) properties after being immersed respectively in water for 300 days at room temperature, boiling water for 12 h, and corrosive environments for 24 h, as well as recoverable PL intensity either after several cycles of heat-cooling experiments or after being continuously exposed to a 405 nm laser irradiation. Besides, a spontaneous enhancement of 20-25% of emission intensity during the 1-2.5 hours' stage of a 405 nm laser irradiation, attributed to the radiative recombination of charge carriers that can be de-trapped from trapping levels upon the laser light irradiation and that then spontaneously reinforces the emission intensity, is observed in the GIG-CsPbBr 3 :Ln 3+ NCs. Finally, a white light-emitting prototype, with a CIE chromaticity coordinate at (0.4110, 0.3706), a color rendering index of 89 and a correlated color temperature of 3363 K is realized by combining the GIG-CsPbBr 3 NCs, YAG:Ce and CaWO4:Eu phosphors.

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Environmentally friendly CsPbBr3 QDs multicomponent glass with super-stability for optoelectronic devices and up-converted lasing

Cited by 35 publications

References 41 publications

Ultrastable Zero-Dimensional Cs₄PbBr₆ Perovskite Quantum Dot Glass

Ultrastable Zero-Dimensional Cs₄PbBr₆ Perovskite Quantum Dot Glass

Rare earth doping in perovskite luminescent nanocrystals and photoelectric devices

Spectral Tuning, Stabilities under External Exposures, and Spontaneous Enhancement of Emission Intensity in Grown‐into‐Glass All‐Inorganic Metal Halide Perovskite Nanocrystals

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Environmentally friendly CsPbBr3 QDs multicomponent glass with super-stability for optoelectronic devices and up-converted lasing

Cited by 35 publications

References 41 publications

Ultrastable Zero-Dimensional Cs4PbBr6 Perovskite Quantum Dot Glass

Ultrastable Zero-Dimensional Cs4PbBr6 Perovskite Quantum Dot Glass

Rare earth doping in perovskite luminescent nanocrystals and photoelectric devices

Spectral Tuning, Stabilities under External Exposures, and Spontaneous Enhancement of Emission Intensity in Grown‐into‐Glass All‐Inorganic Metal Halide Perovskite Nanocrystals

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Product

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Ultrastable Zero-Dimensional Cs₄PbBr₆ Perovskite Quantum Dot Glass

Ultrastable Zero-Dimensional Cs₄PbBr₆ Perovskite Quantum Dot Glass