Optical properties of Cu ions‐doped ZnSe quantum dots in silicate glasses

Li, Kai; Liu, Chao; Zhao, Zhiyong; Deng, Zhao; Xia, Mengling; Ye, Ying

doi:10.1111/jace.15761

Cited by 10 publications

(3 citation statements)

References 60 publications

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“…[32] Luminescence of IIB-VIA QDs in glasses also can be enhanced by energy transfer between the QDs and transition metal ions or rare earth ions. [57,58] Besides the applications on emitting sources, other applications of IIB-VIA QDs-embedded glasses have also been explored. The advantage of QDs in glasses is their stability compared to QDs without packaging material.…”

Section: Wwwadvopticalmatdementioning

confidence: 99%

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Semiconductor Quantum Dots‐Embedded Inorganic Glasses: Fabrication, Luminescent Properties, and Potential Applications

Xia

Luo

Chao

et al. 2019

Advanced Optical Materials

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of the glass, which can provide a stable environment for QDs. Besides, some new glasses, such as phosphate, germanate, and gallate glasses, are made by replacing Si by P, Ge, and Ga at a slight expense of stability for better transmittance at specific wavelength. Embedding QDs into inorganic glass can secure chemical stability, thermal stability, and mechanical stability, thus providing access to device manufacturing and endurable operation. [15][16][17][18] So far, IIB-VIA, IVB-VIA, and halide perovskite QDs have been successfully incorporated into glass by conventional melt-quenching and subsequent heat-treatment method and their optical properties have been extensively investigated. [18][19][20] Taking advantage of the stability, the applications of QDs-embedded glasses on nonlinear optical devices, [21,22] emitting devices, [15,23,24] and signal amplification in the fiber-optic communication system [3,25] have been explored. Recently, with the outstanding performance of halide perovskite materials in optoelectronic field, the perovskite NCs-doped glasses become a new research hotspot, especially for the applied research on white LED (wLED). For instance, wLED with a luminous efficiency of 50-60 lm W −1 and external efficiency of 20-25% was obtained with perovskite NCs-embedded glass slices as light converters. [24] Particularly, green light-emitting device made by CsPbBr 3 nano crystals (NCs)-embedded glass can realize a luminous efficiency of 118 lm W −1 and an external quantum efficiency of 28.14%. [24] Meanwhile, the luminescence intensity of CsPbBr 3 NCsembedded glass can be maintained above 90% when stored in water for a week or experienced a heating/cooling cycle at 100 °C. [17] QDs-embedded glasses have been studied for several decades. Although there are several review papers for a specific topic such as PbS QDs-doped glasses [26] and QDs-doped glasses for fibers, [27] to our best knowledge, no systematic overview has been made in QDs-embedded inorganic glasses until now. Here, we review the fabrication, luminescent properties, and potential application of QDs-embedded inorganic glasses. We first summarize the preparation methods and growth kinetics of QDs in glasses; we then review the optical properties and application explorations of IIB-VIA, IVB-VIA, and halide perovskite QDs-embedded glasses. Last we propose research directions to overcome the major challenges associated with these glasses for ultimate applications. Quantum dots (QDs)-embedded inorganic glasses combine the outstanding luminescent properties of QDs with the chemical, mechanical, and thermal stability of glasses, overcoming the instability bottleneck of QDs and facilitating their wide and endurable applications such as nonlinear optical devices, light emission, and signal amplification in the fiber-optic communication system. Typical QDs incorporated into glasses include IIB-VIA (e.g., ZnO, CdSe), IVB-VIA (e.g., PbS), and halide perovskite (CsPbBr 3 , et al.) QDs. Here, the preparation methods and growth kinetics of QDs in glasses ...

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Section: Wwwadvopticalmatdementioning

confidence: 99%

“…The luminescence intensity of CdS QDs‐embedded glass was increased approximately three times by surface plasmons resonance of Ag NCs . Luminescence of IIB‐VIA QDs in glasses also can be enhanced by energy transfer between the QDs and transition metal ions or rare earth ions …”

Section: Semiconductor Qds In Glasses: Materials Properties and Appmentioning

confidence: 99%

Semiconductor Quantum Dots‐Embedded Inorganic Glasses: Fabrication, Luminescent Properties, and Potential Applications

Xia

Luo

Chao

et al. 2019

Advanced Optical Materials

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“…This is because that, on the one hand, the Cu 2þ doping produced new energy levels that led to the red emission and, on the other hand, its squeezing into the InP core could also signi¯cantly quench the InP emission. 31,32 Tunneling electron microscopy was conducted to investigate the morphology and size of Cu:InP QDs with the varying dopant (Cu 2þ ) amounts. As shown in Fig.…”

Section: Fluorescence Ratiometry By Changing the Dopant Amountmentioning

confidence: 99%

Synthesis and Functionalization of Copper-Doped Indium Phosphate Quantum Dots with Ratiometric Fluorescence

Xue

Huang

et al. 2019

NANO

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The doped quantum dots (QDs) that feature dual emission in one nanocrystal and long fluorescence lifetime have gained great interest in biosensing and bioimaging applications. In this work, we report the synthesis and functionalization of copper ion-doped indium phosphate (Cu:InP) QDs that exhibit simultaneous green InP emission and red Cu[Formula: see text] emission. The oil-soluble QDs were synthesized by adsorbing Cu[Formula: see text] onto InP core, followed by growing zinc selenide (ZnSe) shell via the successive ion layer adsorption reaction. During the synthesis, fluorescence ratiometry (and resultant multiple fluorescence colors) can be generated by changing either the dopant amount or the shell-growth time, but they act in a different manner: increasing the Cu[Formula: see text] amount results in quenched InP emission and oppositely improved Cu[Formula: see text] emission; the increase of shell-growth time leads to continuously improved Cu[Formula: see text] emission relative to constant InP emission. Further, functionalization of the oil-soluble Cu:InP QDs with dihydrolipoic acid-polyethylene glycol (DHLA-PEG) via ligand exchange produces the water-soluble and biocompatible dual-emission QDs. The PEGylated Cu:InP QDs present desirable charge neutrality and excellent thermal stability and photostability, thereby holding high potential in a diversity of biomedical applications.

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Highly Luminescent Cesium Lead Halide Perovskite Nanocrystals Stabilized in Glasses for Light‐Emitting Applications

Zhang

Zhao

et al. 2019

Advanced Optical Materials

224

135

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Cesium lead halide (CsPbX3) nanocrystals have great potential for photovoltaic and optoelectronic applications, but they are sensitive to oxygen, moisture, and light irradiation. Embedding these CsPbX3 nanocrystals into all‐inorganic amorphous solid matrices such as glass is expected to improve their stability. In this work, CsPbX3 nanocrystals are precipitated in boro‐germanate glasses with tunable composition, absorption, and photoluminescence. Quantum efficiency of CsPbBr3 nanocrystals in glass can be as high as ≈80% and ≈20% for CsPb(Cl/Br)3 and CsPb(Br/I)3 nanocrystals, respectively. Thermo‐ and photostabilities of CsPbX3 nanocrystals in glass are greatly improved due to the inert nature of glasses, and intense laser irradiation‐induced damage to CsPbX3 nanocrystals is recoverable through thermal annealing. With CsPbBr3 nanocrystal‐embedded glass slices, a green light‐emitting device with a luminous efficiency of ≈120 lm W−1 and an external quantum yield of ≈30% is achieved. A white‐light‐emitting device consisting of CsPbBr3 nanocrystals and CsPb(Br/I)3 nanocrystal–embedded glass slices shows luminous efficiency in the range of 50–60 lm W−1 and external quantum yield of 20–25%. The thermo‐ and photostabilities along with the chemical stability of CsPbX3 nanocrystal–embedded glasses are promising materials for photoluminescence related applications.

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Optical properties of Cu ions‐doped ZnSe quantum dots in silicate glasses

Cited by 10 publications

References 60 publications

Semiconductor Quantum Dots‐Embedded Inorganic Glasses: Fabrication, Luminescent Properties, and Potential Applications

Semiconductor Quantum Dots‐Embedded Inorganic Glasses: Fabrication, Luminescent Properties, and Potential Applications

Synthesis and Functionalization of Copper-Doped Indium Phosphate Quantum Dots with Ratiometric Fluorescence

Highly Luminescent Cesium Lead Halide Perovskite Nanocrystals Stabilized in Glasses for Light‐Emitting Applications

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