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<p>Europium (III) (Eu<sup>3+</sup>) ion doping represents a cornerstone strategy in materials science for engineering advanced luminescent materials. This review provides a comprehensive analysis of the synthesis, fundamental photophysical properties, and underlying doping mechanisms of Eu<sup>3+</sup>-doped inorganic and hybrid nanostructures. We detail how the judicious selection of a host matrix and precise control over doping parameters govern the luminescent output by influencing the local crystal field environment around the Eu<sup>3+</sup> ion. Critical doping effects such as the antenna (sensitization) effect, concentration quenching, and thehypersensitivity of the <sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<sub>2</sub> transition&#xa0;are examined as the determinants of emission intensity, color purity, and lifetime. The resultant properties, including sharp red emission (~ 614&#xa0;nm), millisecond-scale lifetimes, and exceptional photostability, are then linked to their transformative applications in solid-state lighting (warm-white LEDs), advanced anti-counterfeiting, high-contrast bioimaging, and ratiometric optical sensing. This work concludes with future perspectives on overcoming challenges related to quantum efficiency and excitation pathways, aiming to guide the rational design of next-generation luminescent materials.</p>

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Review: Europium(III)-doped nanoarchitectonic materials—synthesis, photophysical properties, and applications

  • 期刊论文

  • 发表日期：

    2026年6月20日

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  • Bastian Athen,
  • Mahran Goldstanian

摘要

Europium (III) (Eu3+) ion doping represents a cornerstone strategy in materials science for engineering advanced luminescent materials. This review provides a comprehensive analysis of the synthesis, fundamental photophysical properties, and underlying doping mechanisms of Eu3+-doped inorganic and hybrid nanostructures. We detail how the judicious selection of a host matrix and precise control over doping parameters govern the luminescent output by influencing the local crystal field environment around the Eu3+ ion. Critical doping effects such as the antenna (sensitization) effect, concentration quenching, and thehypersensitivity of the 5D0 → 7F2 transition are examined as the determinants of emission intensity, color purity, and lifetime. The resultant properties, including sharp red emission (~ 614 nm), millisecond-scale lifetimes, and exceptional photostability, are then linked to their transformative applications in solid-state lighting (warm-white LEDs), advanced anti-counterfeiting, high-contrast bioimaging, and ratiometric optical sensing. This work concludes with future perspectives on overcoming challenges related to quantum efficiency and excitation pathways, aiming to guide the rational design of next-generation luminescent materials.