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Updated: Jun 15, 2026
Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
Published on: April 14, 2020
[Electrooptical properties of nanoscale and bulk SrAl2O4: Eu, Dy]
Xiao-Xia Duan1, Shi-Hua Huang, Feng Teng
1Key Laboratory of Luminescence and Optical Information, Ministry of Education, and Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China. duanxiaoxia@126.com
Abstract:
Nanoscale and bulk SrAl2O4 : Eu2+, Dy3+ were prepared respectively by auto-combustion of citrate gelatin and high temperature solid state method. The crystalline structure was examined by X-ray diffraction (XRD). The current-voltage characteristic was measured with a Keithley source meter 2 410. The VUV spectra were carried out with VUV spectrometer. There-result showed that light irradiation increased the current, which indicates that some electrons are excited to the conduction band of host lattice. VUV excitation spectrum of nanoscale SrAl2O4 : Eu2+, Dy3+ shifts to the shorter wavelength relative to bulk material because it has narrower bandgap. As a result, the current of nanoscale material is weaker than that of the bulk one.
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