Blue-violet photoluminescence from large-scale highly aligned boron carbonitride nanofibers

We report on the strong blue-violet photoluminescence (PL) at room temperat ure from the large-scale highly aligned boron carbonitride (BCN) nanofibers synthesized by bias-assisted hot filament chemical vapor deposition. The p hotoluminescence peak wavelength shifts in the range of 470-390 nm by chang ing the chemical composition of the BCN nanofibers, which shows an interest ing blue and violet-light-emitting material with adjustable optical propert ies. The mechanism for the shift of the PL peaks at room temperature is als o discussed. (C) 2000 American Institute of Physics. [S0003-6951(00)04427-2 ].