Confinement and passivation of perovskite quantum dots in porous natural palygorskite toward an efficient and ultrastable light-harvesting system in water

Meng, Genping; Mu, Xijiao; Zhen, Liping; Hai, Jun; Zhang, Zefan; Hao, Tianzhi; Lu, Siyu; Wang, Aiqin; Wang, Baodui

doi:10.1039/d2sc05220b

Cited by 4 publications

(4 citation statements)

References 78 publications

(101 reference statements)

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“…Inorganic lead halide perovskite nanocrystals (NCs) have garnered widespread attention due to their desirable properties, such as tunable band gap, high photoluminescence quantum yields (PLQYs), high defect tolerance, long carrier lifetime and diffusion lengths [1][2][3]. In the past decade, the research of metal halide perovskite has made gradual progress.…”

Section: Introductionmentioning

confidence: 99%

Mn derived growth of CsPbBr₃ nanoplatelets for stable and bright orange emission

He,

Xie,

Wang

et al. 2024

J. Phys. D: Appl. Phys.

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Mn-doped perovskites have been extensively studied in optics, magnetism, and electronics due to their orange emission. However, successful Mn doping required a high Mn/Pb feed ratio. In this paper, Mn-doped CsPbBr3 nanoplatelets (NPLs) with bright orange emission were prepared by a two-step slow thermal injection synthesis. The slow injection of precursors effectively slow-down the crystal growth kinetic process and controls the growth of undoped CsPbBr3 NPLs. This process also significantly improves Mn doping efficiency. Mn doping induced the generation of numerous precursor clusters during the growth of CsPbBr3 NPLs, and the formation of these clusters was crucial for enhancing the doping efficiency. The maximum amount of Mn precursor in CsPb0.83Mn0.17Br3 was 50% of Pb precursors. The photoluminescence quantum yields (PLQYs) of CsPb0.94Mn0.06Br3 NPLs reached up to 80.6%, which was 3.1 times of that of CsPbBr3 NPLs. The PL properties of Mn-doped CsPbBr3 NPLs were significantly enhanced compared with pure CsPbBr3 NPLs. The growth process and luminescence mechanism of Mn-doped CsPbBr3 NPLs were discussed. High PLQYs and efficient Mn doping supplied an ideal approach for the preparation of various CsPbX3 (X = Cl, Br, and I) NCs for commercial applications.

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Section: Introductionmentioning

confidence: 99%

Mn derived growth of CsPbBr₃ nanoplatelets for stable and bright orange emission

He,

Xie,

Wang

et al. 2024

J. Phys. D: Appl. Phys.

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“…It has a good application prospect in light emitting diode, photo detector, solar cell, laser and other fields. [ 1–7 ] In particular, the CsPbX 3 (X = Br, Cl, I) PQDs are considered to be a promising luminescent material. However, the poor stability to air, temperature, especially water, which seriously limits their practical application in the field of optoelectronic.…”

Section: Introductionmentioning

confidence: 99%

“…It has a good application prospect in light emitting diode, photo detector, solar cell, laser and other fields. [1][2][3][4][5][6][7] In particular, the CsPbX 3 (X = Br, Cl, I) PQDs are considered to be a promising luminescent material. However, the poor stability to air, temperature, especially water, which photoluminescence (PL) intensity remained at 60% after 24 h. Compared with CsPbBr 3 PQDs synthesized by OA as a surface ligand, the PL intensity decreased to <1% after only 1 h. This method can also improve the stability of CsPbCl 3 and CsPbI 3 PQDs in water.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification Strategy Synthesized CsPbX₃ Perovskite Quantum Dots with Excellent Stability and Optical Properties in Water

Song

Cao

et al. 2023

Adv Funct Materials

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The poor stability of CsPbX3 (X = Cl, Br, I) perovskite quantum dots (PQDs) in polar solvents such as water, seriously hinders their practical application. Herein, 5‐Bromovaleric acid (BVA) is used to replace oleic acid (OA), the most common surface ligand in CsPbX3 PQDs synthesis. Under the synergic action of oleylamine (OLA), CsPbX3 PQDs with high water stability can be synthesized directly in water. Because the carboxyl ligands provided by BVA, and the long chain amines provided by OLA formed hydrophobic shells on the surface of CsPbBr3 PQDs, the obtained CsPbBr3 PQDs still has high luminescence intensity and photoluminescence quantum yield after being dispersed in water for several days, and the luminescence peak is always maintained at 518 nm. In contrast, the luminescence intensity of CsPbBr3 PQDs synthesized with OA and OLA is <1% of the initial intensity after only 30 min. CsPbCl3 and CsPbI3 PQDs synthesized directly in water by this method also show high water stability. In this study, for the first time the synthesis method of CsPbX3 PQDs with high water stability using BVA/OLA as surface ligands is proposed, which provides an effective way to explore the synthesis of PQDs that can maintain stability in water.

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“…In nature, light harvesting plays a pivotal role in the photosynthesis process of green plants. [ 1 ] Inspired by nature, many artificial light‐harvesting systems (LHSs) have been developed based on liquid crystal, [ 2 ] polypeptides, [ 3 ] quantum dots, [ 4 ] metallacages, [ 5 ] metallacycles, [ 6 ] supramolecular systems, [ 7 ] dendrimers, [ 8 ] polymers, [ 9 ] supramolecular coordination frameworks, [ 10 ] metal−organic frameworks, [ 11 ] etc. LHSs have promising applications in photochemical catalysis, [ 12 ] information encryption and anticounterfeiting, [ 13 ] fluorescence probes and cell imaging, [ 14 ] circularly polarized luminescence, [ 15 ] etc.…”

Section: Introductionmentioning

confidence: 99%

Near‐Infrared Emissive Cascaded Artificial Light‐Harvesting System with Enhanced Antibacterial Efficiency

Chen

et al. 2023

Adv Healthcare Materials

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Combination of platinum(II) metallacycles and photodynamic inactivation presents a promising antibacterial strategy. Herein, a cascaded artificial light‐capturing system is developed in which an aggregation‐induced emission‐active platinum(II) metallacycle (PtTPEM) is utilized as the antenna, sulforhodamine 101 (SR101) as a key conveyor, and the near‐infrared emissive photosensitizer Chlorin‐e6 (Ce6) as the final energy acceptor. The well‐dispersed Ce6 in the proximity of energy donors not only avoids self‐quenching in the physiological environment but also contributes to energy transfer from donor to acceptor, thereby significantly improving the 1O2 generation ability of the light‐harvesting system under white light irradiation. By integrating the platinum(II) metallacycle and 1O2, a more efficient synergistic antibacterial effect is achieved at low concentrations, along with a significant decrease in dark toxicity caused by PtTPEM.

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Confinement and passivation of perovskite quantum dots in porous natural palygorskite toward an efficient and ultrastable light-harvesting system in water

Abstract: Perovskite quantum dots (QDs) are promising as representative candidates to construct next-generation superior artificial light-harvesting systems (ALHSs). However, their high sensitivity to external environments, especially to water, posts a stringent...

Cited by 4 publications

References 78 publications

Mn derived growth of CsPbBr₃ nanoplatelets for stable and bright orange emission

Mn derived growth of CsPbBr₃ nanoplatelets for stable and bright orange emission

Surface Modification Strategy Synthesized CsPbX₃ Perovskite Quantum Dots with Excellent Stability and Optical Properties in Water

Near‐Infrared Emissive Cascaded Artificial Light‐Harvesting System with Enhanced Antibacterial Efficiency

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Confinement and passivation of perovskite quantum dots in porous natural palygorskite toward an efficient and ultrastable light-harvesting system in water

Abstract: Perovskite quantum dots (QDs) are promising as representative candidates to construct next-generation superior artificial light-harvesting systems (ALHSs). However, their high sensitivity to external environments, especially to water, posts a stringent...

Cited by 4 publications

References 78 publications

Mn derived growth of CsPbBr3 nanoplatelets for stable and bright orange emission

Mn derived growth of CsPbBr3 nanoplatelets for stable and bright orange emission

Surface Modification Strategy Synthesized CsPbX3 Perovskite Quantum Dots with Excellent Stability and Optical Properties in Water

Near‐Infrared Emissive Cascaded Artificial Light‐Harvesting System with Enhanced Antibacterial Efficiency

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Product

Resources

About

Mn derived growth of CsPbBr₃ nanoplatelets for stable and bright orange emission

Mn derived growth of CsPbBr₃ nanoplatelets for stable and bright orange emission

Surface Modification Strategy Synthesized CsPbX₃ Perovskite Quantum Dots with Excellent Stability and Optical Properties in Water