Pressure-controlled luminescence in fast-response barium fluoride crystals by Marilou Cadatal-Raduban, Luong Viet Mui, Masahiro Yamashita, Yuki Shibazaki, Toshihiko Shimizu, Nobuhiko Sarukura, Kohei Yamanoi

“…The wavelength of the CL emission shifted from 221 nm to 240 nm when 5.0 GPa was applied via a sapphire anvil cell. Increasing the pressure decreases the core-valence bandgap due to the downward expansion of the valence band, resulting in a decrease in the valence band minimum. …”
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