Ultrastable Gd3+ doped CsPbBrI2 nanocrystals red glass for high efficiency WLEDs

He, Qingyun; Zhang, Yaqian; Yu, Yanxia; Chen, Ya; Jin, Mengfeifei; Mei, Enrou; Liang, Xiaojuan; Zhai, Lanlan

doi:10.1016/j.cej.2021.128530

Cited by 43 publications

(19 citation statements)

References 62 publications

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“…Inspired by multiple cation engineering in 3D perovskites, the cation alloying strategy can not only relax the lattice strain/ distortion in perovskite crystals but also effectively regulate the crystal orientation and enhance the structural stability in the resulting lms. 113,114 A previous report found that Cs + doping can slow down the crystallization process of 2D perovskites, which is conducive to increasing the crystallinity and enlarging the grain sizes of (BA) 2 (MA) 3 Pb 4 I 13 lms (Fig. 10f).…”

Section: Cation Engineeringmentioning

confidence: 90%

Crystallization regulation of solution-processed two-dimensional perovskite solar cells

Niu

Wang

et al. 2022

J. Mater. Chem. A

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Section: Cation Engineeringmentioning

confidence: 90%

Crystallization regulation of solution-processed two-dimensional perovskite solar cells

Niu

Wang

et al. 2022

J. Mater. Chem. A

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“…Therefore, the halide QD formation mechanism in the amorphous oxide matrix was considered to be different from the thermal-induced crystallization process. A large number of studies have found that the PL intensity of CsPbBr 3 QDs in the glass significantly decreased after long time storage under atmospheric conditions or soaking in water, ,, which indicates that the hydration can slowly cause the decomposition of the CsPbBr 3 QDs even if they are embedded in the glass matrix. Similarly, the hydration-induced halide QD crystallization could also be observed on the glass surface.…”

Section: Discussionmentioning

confidence: 99%

In Situ Growth Mechanism of CsPbX₃ (X = Cl, Br, and I) Quantum Dots in an Amorphous Oxide Matrix

et al. 2022

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Oxide glass matrix embedding is an effective way to improve the stability of halide quantum dots (QDs). However, the in situ growth mechanism of halide perovskite QDs in an amorphous matrix has not been clarified. In this work, the growth process of halide QDs in an amorphous oxide matrix was successfully elucidated via in situ spectroscopy, analytical electron microscopy, and the X-ray scattering/diffraction technique. The results showed that the in situ growth mechanism of the halide QDs in the amorphous oxide matrix was different from that of traditional glassceramics, which was more like a halide nanoglass-based phase transition process. Typically, a complex multiphase (halide nanoglass, CsPb 2 X 5 , and CsPbX 3 ) transition existed in the amorphous oxide matrix, and the obtained CsPbX 3 QD glass showed a halide multiphase coexisting microstructure. More importantly, the crystallization process from the halide nanoglass to QDs can be induced by known ways, including mechanical force, hydration, and heat treatment. The clarified in situ growth mechanism may pave the way toward the development of high-efficiency halide perovskite QD-embedded amorphous materials and optoelectronic devices.

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“…[91] Xiang's group embedded Gd 3+ -doped CsPbBrI 2 NCs into borosilicate glass by this method, and the PLQY of the sample was increased due to the introduction of Gd 3+ ions. [92] And the as-prepared material showed excellent heat, light and water stability. At the same time, this method can also be used to synthesize single crystal perovskite.…”

Section: Melt Quenching and In Situ Crystallization Methodsmentioning

confidence: 97%

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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Ultrastable Gd3+ doped CsPbBrI2 nanocrystals red glass for high efficiency WLEDs

Cited by 43 publications

References 62 publications

Crystallization regulation of solution-processed two-dimensional perovskite solar cells

Crystallization regulation of solution-processed two-dimensional perovskite solar cells

In Situ Growth Mechanism of CsPbX₃ (X = Cl, Br, and I) Quantum Dots in an Amorphous Oxide Matrix

Rare earth doping in perovskite luminescent nanocrystals and photoelectric devices

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Ultrastable Gd3+ doped CsPbBrI2 nanocrystals red glass for high efficiency WLEDs

Cited by 43 publications

References 62 publications

Crystallization regulation of solution-processed two-dimensional perovskite solar cells

Crystallization regulation of solution-processed two-dimensional perovskite solar cells

In Situ Growth Mechanism of CsPbX3 (X = Cl, Br, and I) Quantum Dots in an Amorphous Oxide Matrix

Rare earth doping in perovskite luminescent nanocrystals and photoelectric devices

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In Situ Growth Mechanism of CsPbX₃ (X = Cl, Br, and I) Quantum Dots in an Amorphous Oxide Matrix