Dual-color light emission and optical waveguide behavior in core-shell heterostructures based on surface doping of cocrystal with rare earth ions

Wang, Jing; Yin, Wanlu; Xu, Shengyuan; Xue, Xiangxin; Zhao, Li‐Xia; Xu, Weiqing

doi:10.1016/j.dyepig.2022.110616

Cited by 2 publications

(1 citation statement)

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“…Core–shell structural materials have attracted great attention due to their unique structure and amazing chemical properties. − Spherical core–shell phosphor shows superior performance and expands potential applications when compared to other morphology of phosphors. − As is known, SiO 2 is a kind of good core material because of its spherical morphology, good dispersion, controllable size, low price, stable physical and chemical properties, high biological compatibility, and optical transparency. − Meanwhile, gadolinium oxides (Gd 2 O 3 ) are proven as an outstanding luminescent host for doping rare earth owing to their excellent thermal, mechanical, and chemical stabilities. − Therefore, SiO 2 @Gd 2 O 3 :Ln 3+ has been reported and demonstrated for its potential applications in anticancer drug delivery, multicolor displays, and light-emitting diodes. − …”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of SiO₂:Tb³⁺@Gd₂O₃:Eu³⁺ and Its Inverted Tb³⁺-Eu³⁺ Core–Shell Phosphors

Xie,

Liu,

Yang

et al. 2024

Inorg. Chem.

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How to effectively improve energy transfer efficiency and luminous intensity inspired us to synthesize a series of SiO2:x%Tb3+@Gd2O3:y%Eu3+ samples, study their luminescence properties and interfacial energy transfer (IET), and compare with SiO2:x%Eu3+@Gd2O3:y%Tb3+. The results show that SiO2:x%Tb3+@Gd2O3:y%Eu3+ can exhibit adjustable multicolor luminescence from red to green at different concentrations of Eu3+ and Tb3+ or under different excitation wavelengths, and there exists efficient IET from Tb3+ to Eu3+ in SiO2:x%Tb3+@Gd2O3:y%Eu3+ and SiO2:x%Eu3+@Gd2O3:y%Tb3+, which improves the energy transfer efficiency and luminous intensity. In addition, the luminescence properties are different between SiO2:3%Tb3+@Gd2O3:3%Eu3+ and SiO2:3%Eu3+@Gd2O3:3%Tb3+, and the energy transfer efficiency of Tb3+ → Eu3+ in SiO2:3%Tb3+@Gd2O3:3%Eu3+ is obviously higher than that in SiO2:3%Eu3+@Gd2O3:3%Tb3+. The present study not only developed a kind of multicolor luminescent phosphor but also offered an important new strategy for improving the energy transfer efficiency and luminescent intensity.

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Section: Introductionmentioning

confidence: 99%

A Comparative Study of SiO₂:Tb³⁺@Gd₂O₃:Eu³⁺ and Its Inverted Tb³⁺-Eu³⁺ Core–Shell Phosphors

Xie,

Liu,

Yang

et al. 2024

Inorg. Chem.

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Unique 2D Face Topologies in Naphthyl‐Appended Naphtho[k]fluoranthene‐Based 3D Crystals for Optical Waveguide

Hino¹,

Matsuo²,

Hayashi³

2023

Advanced Optical Materials

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Molecular crystals exhibiting optical waveguiding are strongly dependent on total internal reflection, molecular stacking arrangements, spatial distributions of transition dipole moments, and topologies. Fluoranthene derivatives are popular fluorescent dyes that have not yet been engineered into crystalline optical materials. Here, a naphthyl‐appended naphtho[k]fluoranthene that exhibits efficient fluorescence in solution and in the solid state is newly synthesized through a one‐pot Pd‐catalyzed reaction of 1,8‐dibromonapthalene. It selectively gives two crystal topologies derived from direction‐specific crystal growth. Using spatially resolved photoluminescence analyses, the direction‐oriented light that propagates along these topologies (each face of the crystal) is investigated. There are different optical‐loss coefficients along the various directions on each face. Therefore, face‐specific waveguiding depends on molecular arrangements. Anisotropic waveguiding in each face is observed. Overall, these results suggest potential applications of fluoranthene crystals and their topological 2D planes as optical waveguides and integrated optical circuits.

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Dual-color light emission and optical waveguide behavior in core-shell heterostructures based on surface doping of cocrystal with rare earth ions

Cited by 2 publications

References 56 publications

A Comparative Study of SiO₂:Tb³⁺@Gd₂O₃:Eu³⁺ and Its Inverted Tb³⁺-Eu³⁺ Core–Shell Phosphors

A Comparative Study of SiO₂:Tb³⁺@Gd₂O₃:Eu³⁺ and Its Inverted Tb³⁺-Eu³⁺ Core–Shell Phosphors

Unique 2D Face Topologies in Naphthyl‐Appended Naphtho[k]fluoranthene‐Based 3D Crystals for Optical Waveguide

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Dual-color light emission and optical waveguide behavior in core-shell heterostructures based on surface doping of cocrystal with rare earth ions

Cited by 2 publications

References 56 publications

A Comparative Study of SiO2:Tb3+@Gd2O3:Eu3+ and Its Inverted Tb3+-Eu3+ Core–Shell Phosphors

A Comparative Study of SiO2:Tb3+@Gd2O3:Eu3+ and Its Inverted Tb3+-Eu3+ Core–Shell Phosphors

Unique 2D Face Topologies in Naphthyl‐Appended Naphtho[k]fluoranthene‐Based 3D Crystals for Optical Waveguide

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A Comparative Study of SiO₂:Tb³⁺@Gd₂O₃:Eu³⁺ and Its Inverted Tb³⁺-Eu³⁺ Core–Shell Phosphors

A Comparative Study of SiO₂:Tb³⁺@Gd₂O₃:Eu³⁺ and Its Inverted Tb³⁺-Eu³⁺ Core–Shell Phosphors