Rational Synthesis of Rare-Earth-Doped Co3O4 Nanostructures: Insights into Eu3+-Induced Oxygen Vacancies for Enhanced Battery-Type Hybrid Supercapacitor Performance 来源：ACS PublicationsCobalt oxide (Co3O4) has emerged as a promising electrode material for energy storage due to its high theoretical capacity. However, its practical application is limited by poor electrical conductivity, sluggish charge transfer kinetics, and restricted electrochemical activity. To overcome these limitations, rare-earth (RE) doping has been explored as a strategy to tailor the physicochemical properties...
Release time:
2025
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07
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24
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Strong Emission Enhancement via Dual-Wavelength Coexcitation in YbTm-Doped Upconverting Nanoparticles for Near-Infrared and Subdiffraction Imaging来源：ACS PublicationsUpconversion (UC) emission in lanthanide-doped nanoparticles is typically excited by a single near-infrared (NIR) wavelength, most commonly around 975 nm, which promotes ground-state absorption by Yb3+ sensitizer ions and subsequent energy transfer to activator ions such as Tm3+. However, due to the presence of multiple long-lived excited states in lanthanide ions, additional excitation wavelengths can activate or modulate further ...
Release time:
2025
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07
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23
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Magnetic Properties and Large Second-Harmonic Generation Response of a Chiral Ternary Chalcogenide: Eu2SiSe4来源：ACS PublicationsEu(II)-containing chalcogenides are an emerging class of materials that are of great interest due to their high optical activity and intriguing magnetism. Here, we synthesized Eu2SiSe4 as red-colored single crystals and characterized its structure with single-crystal X-ray diffraction, confirming the reported chiral monoclinic P21 symmetry at room temperature. The crystal structure of Eu2SiSe4 comprises distorted SiSe4 tetrahedral units and charge-balancing Eu(II) cati...
Release time:
2025
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07
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23
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Synthesis and Characterization of Sm3+/Yb3+ Codoped Oxychloride Tellurite Glasses for Solar Cell Enhancement via Energy Conversion 来源：ACS PublicationsThis study presents the synthesis and characterization of novel oxychloride tellurite glasses codoped with Sm3+/Yb3+. These materials were investigated for their potential applications as spectral converters to enhance the efficiency of silica-based solar cells. Optical spectroscopy revealed the successful incorporation of both rare-earth ions in the glass matrix. It was observed that with the increase of Yb3+ ion concentration, the lifetime...
Release time:
2025
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07
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21
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