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Updated: May 8, 2026
Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
Published on: April 14, 2020
Self assembly of three-dimensional Lu2O3:Eu3+ inverse opal photonic crystals, their modified emissions and
Yunfeng Wang1, Yongsheng Zhu, Wen Xu
1State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China. songhw@jlu.edu.cn.
Abstract:
In this study, Lu2O3:Eu(3+) inverse-opal-photonic crystals (IOPCs) with controllable lattice constants were fabricated using a polymethylmethacrylate (PMMA) template. The modification effect of PC on the (5)D0-(7)F(J) and (5)D1-(7)F(J) (J = 1-6) transitions were systemically studied by emission spectra, luminescent dynamics and the temperature-dependence. It is significant to observe that the increase of (5)D0-(7)F(J) radiative lifetime for Eu(3+) ions (30%) in contrast to the reference sample was mainly due to modulation of the effective refractive index, rather than the density of optical states. The spontaneous decay rate in (5)D1 increased linearly with the decreasing lattice constants, which was due to the change in (5)D1-(5)D0 nonradiative relaxation of the IOPC samples. The temperature quenching of Eu(3+) ions in the IOPCs could be suppressed considerably more than the reference. On this basis, dual functional refractive index detection with infiltrated solutions was realized by monitoring the variation in the photonic stop band (PSB) and the lifetime of (5)D0-(7)F2 transition of the Lu2O3:Eu(3+) IOPCs. This work shows that the Lu2O3:Eu(3+) IOPCs present highly modified photoluminescence properties and are promising candidates for dual-functional refractive index sensing application.
