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Updated: Feb 26, 2026

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
Published on: April 16, 2017
Spatial resolution and cathodoluminescence intensity dependence on acceleration voltage in electron beam excitation
Yu Masuda1, Masashi Kamiya2, Atsushi Sugita2
1Graduate School of Science and Technology, Shizuoka University, 3-5-1, Johoku, Naka, Hamamatsu 4328561, Japan.
Abstract:
This study presents relationship between acceleration voltage and spatial resolution of electron-beam assisted (EXA) optical microscope. The nanometric illumination light sources of the present EXA microscope was red-emitting cathodoluminescence (CL) in the Y2O3:Eu3+ thin film excited by focused electron beam. Our experimental results demonstrated that the spatial resolutions of the EXA microscope were higher as the acceleration voltage was higher. We managed to make images of the scattered gold particles with approximately 90 nm-resolutions at the voltages higher than 20 kV. The dependence of the spatial resolution on the acceleration voltage was explained by the distribution of simulated electron scattering trajectories in the luminescent thin film.
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