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oe1(光电查) - 科学论文

2 条数据
?? 中文（中国） ▾

  • Constructing new thermally coupled levels based on different emitting centers for high sensitive optical thermometer

    摘要： In multi-emitting and thermochromic Bi3+-Tb3+-Eu3+ co-doped garnet type Ca3Sc2Si3O12 phosphor, new thermally coupled levels (New-TCLs) are firstly constructed based on 3P1(Bi3+)/5D0(Eu3+) and 5D4(Tb3+)/5D0(Eu3+). And the relative electron population of New-TCLs obeys similar Boltzmann type distribution rules owing to stronger thermalization process with the increase of temperature, which can be elaborated by steady-state rate equations. Hence, a novel self-calibrated non-invasion optical thermometer with high absolute/relative temperature sensitivities (0.094 K?1 at 498 K; 1.0% K?1 at 448 K) and good signal discrimination (Δλ ≈ 158 nm) can be achieved by taking advantage of fluorescence intensity ratio of such New-TCLs. This work exhibits a novel strategy to design high-performance optical thermometer in high temperature environment.

    关键词： New thermally coupled levels,Thermalization,Optical thermometer,Fluorescence intensity ratio

    更新于2025-09-12 10:27:22

  • Prediction of Thermal Coupled Thermometric Performance of Er <sup>3+</sup>

    摘要： Predicting thermometric performance for diverse materials will facilitate the selection and design of nanothermometers to meet complex environment and specific signal output with saving a lot of time and expense. Herein we explore and unveil the thermal coupled thermometric performance of Er3+/Yb3+ co-doped a set of host lattices via the chemical bond theory of complex crystals. The unknown B and ΔE values of the thermometry are accurately estimated by the chemical bond parameters, further deepening our cognition of the correlation between luminescence properties of Er3+ ions and microscopic crystal structure. This allows us to precisely forecast the thermal coupled thermometric performance of Er3+ for varying host lattices in advance.

    关键词： nanothermometers,chemical bond theory of complex crystals,thermally coupled levels,rare earth,luminescence intensity ratio thermometry

    更新于2025-09-11 14:15:04