“However, this material has a fundamental limitation in that its electroluminescence rapidly deteriorates as the wavelength becomes shorter and fabricating LEDs that can be used in the DUV frequencies remains a challenge.”
“To do this, we focused on injecting electrons and holes to the hexagonal boron nitride band edges by applying a strong voltage to the hexagonal boron nitride nanofilm inducing the tunneling mechanism.” Using DUV micro-spectroscopy, the team then confirmed that the newly fabricated device emits strong UV light.
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