Cathodoluminescent images and spectra of single crystals of Y2O2S:Tb3+ and Gd2O2S:Tb3+ nanometer sized phosphor crystals excited in a field emission scanning transmission electron microscope

6th International Conference on Optical, Optoelectronic and Photonic Materials and Applications 2014

Silver, J.^1 ; Yan, X.^1 ; Fern, G.R.^1 ; Wilkinson, N.^2

Centre for Phosphors and Display Materials, Wolfson Centre for Materials Processing, Brunel University, Uxbridge, Middlesex

UB8 3PH, United Kingdom^1

Gatan UK, 25 Nuffield Way, Oxon, Abingdon

OX14 1RL, United Kingdom^2

关键词: Bulk samples;    Cathodoluminescence imaging;    Cathodoluminescence spectra;    Field emission scanning;    Phosphor crystal;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/619/1/012049/pdf
DOI  :  10.1088/1742-6596/619/1/012049

来源: IOP

【 摘 要 】

Cathodoluminescence (CL) spectra have been collected from single nanometer-sized crystals of Y1.98Tb0.02O2S and Gd1.98Tb0.02O2S using a Gatan Vulcan cathodoluminescence imaging spectrometer. Slight variations observed in the CL spectra taken from the crystals are explained, and discussed in relation to bulk samples.