High luminescent properties of Eu3+-doped CdSSe quantum dots within silicate glass for WLED

Xu, Yingwei; Zhang, Yanjie; Lv, Huanlin; Wu, Yiping; Zou, Ailing

doi:10.1016/j.jlumin.2022.119316

Cited by 3 publications

(1 citation statement)

References 32 publications

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“…6 However, low thermal conductivity of phosphors leads to poor heat dissipation from chips, severely shortening the lifespan and ultimately reducing luminous efficiency of WLEDs. 7,8 Current research mainly focuses on microcrystalline glasses, such as Y 3 Al 5 O 12 (YAG) 9 phosphor-in-glass 10 and silicate glasses, 11 as they display better thermal stability and more simple packaging process compared to phosphors. Nevertheless, high phonon energy of glass matrices significantly reduces the light extraction efficiency.…”

Section: Introductionmentioning

confidence: 99%

Dy/Sr‐codoped (K_0.5Na_0.5)NbO₃ multifunctional transparent‐ferroelectric ceramics with adjustable white‐light emission

Huang,

Zhang,

et al. 2023

J Am Ceram Soc.

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Traditional solid‐state luminescent materials (e.g., phosphors and microcrystalline glasses) have attracted extensive attention due to their high energy efficiency and long lifespan. However, their application scope is limited by complex compositions and manufacturing processes, as well as single‐function. In this study, solid‐state reaction was utilized to prepare transparent‐ferroelectric (K0.5Na0.5)NbO3 (KNN) ceramics by simply codoping with Dy3+ and Sr2+, providing possibilities for large‐scale production. Ceramics exhibit high optical transmittance, high‐quality white‐light emission and relaxor ferroelectric feature. Under irradiation of UV light, photochromic behavior occurring in the ceramics, resulting in modulating the optical performances, especially quality of emitted white light. Multifunctionality can expand latent applications of KNN‐based ceramics from white light‐emitting diodes to modulated optoelectronic devices.

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Section: Introductionmentioning

confidence: 99%

Dy/Sr‐codoped (K_0.5Na_0.5)NbO₃ multifunctional transparent‐ferroelectric ceramics with adjustable white‐light emission

Huang,

Zhang,

et al. 2023

J Am Ceram Soc.

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Structure role of cesium bromide in calcium silicate glasses and glass ceramics

El Damrawi,

Gharghar,

Atef

et al. 2023

Indian J Phys

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To make the interpretation of the complex xCsBr.(100 − x)(CaO:SiO2) glasses easier to study, the structure of glasses in a binary composition CaO–SiO2 is being initially investigated. The changes in the crystallization behavior of glasses and the local environment surrounding silicon atoms could be easily followed using X-ray diffraction (XRD) and nuclear magnetic resonance (NMR) spectroscopy. The XRD pattern of the binary 50CaO–50SiO2 glass showed that its structure was amorphous. But when (CaO:SiO2) is replaced with CsBr, some sharp diffraction lines appear in system of the ternary xCsBr.(100 − x)(CaO:SiO2) glass composition. A Polycrystalline Cs2Ca(SiO3)2 structure is the primary phase in CsBr rich glasses. The results based on transmission electron microscopy (TEM-EDP) and X-ray diffraction pattern (XRD) are in excellent agreement, indicating that crystalline-clustered species develop in glasses enriched with CsBr. Both the NMR and FTIR spectra are clearly defined, and they contain different features that distinguish between different silicate structural subunits. One and two bridging oxygen atoms (BO) can be found in the main SiO4 structural units. Such units become less shielded due to increasing of nonbridging oxygen atoms (NBO) in the silicate network by increasing CsBr at the expense of both SiO2 and CaO. There is a good correlation between the data obtained from FTIR and NMR spectroscopy. Both techniques could differentiate between BO and NBO involved in the silicate structural units.

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Enhanced fluorescence and gain characteristics of PbS doped silica fiber with PbSe nano-semiconductor co-doping

Dong

Zhang

et al. 2023

Optical Fiber Technology

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High luminescent properties of Eu3+-doped CdSSe quantum dots within silicate glass for WLED

Cited by 3 publications

References 32 publications

Dy/Sr‐codoped (K_0.5Na_0.5)NbO₃ multifunctional transparent‐ferroelectric ceramics with adjustable white‐light emission

Dy/Sr‐codoped (K_0.5Na_0.5)NbO₃ multifunctional transparent‐ferroelectric ceramics with adjustable white‐light emission

Structure role of cesium bromide in calcium silicate glasses and glass ceramics

Enhanced fluorescence and gain characteristics of PbS doped silica fiber with PbSe nano-semiconductor co-doping

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High luminescent properties of Eu3+-doped CdSSe quantum dots within silicate glass for WLED

Cited by 3 publications

References 32 publications

Dy/Sr‐codoped (K0.5Na0.5)NbO3 multifunctional transparent‐ferroelectric ceramics with adjustable white‐light emission

Dy/Sr‐codoped (K0.5Na0.5)NbO3 multifunctional transparent‐ferroelectric ceramics with adjustable white‐light emission

Structure role of cesium bromide in calcium silicate glasses and glass ceramics

Enhanced fluorescence and gain characteristics of PbS doped silica fiber with PbSe nano-semiconductor co-doping

Contact Info

Product

Resources

About

Dy/Sr‐codoped (K_0.5Na_0.5)NbO₃ multifunctional transparent‐ferroelectric ceramics with adjustable white‐light emission

Dy/Sr‐codoped (K_0.5Na_0.5)NbO₃ multifunctional transparent‐ferroelectric ceramics with adjustable white‐light emission