Abstract

Low Energy Electron Beam Irradiation (LEEBI) was found to quench the donor-acceptor pair (DAP) attributed to carbon (C <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">N</sub> at 3.28 eV at 80 K) and enhances the emission of the 3.27 eV peak, which has been attributed to a free-to-bound (e,Mg <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sup> ) transition at 300 K. This results in increased cathodoluminescence (CL) emission at room temperature and a decrease in CL emission at liquid nitrogen temperatures (~77 K).

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