Dk. Nelson et al., INFLUENCE OF THE ELECTRIC-FIELD ON THE EXCITONIC LUMINESCENCE OF EPITAXIAL GAN FILMS, Journal of luminescence, 72-4, 1997, pp. 865-866
Quenching and enhancement of exciton photoluminescence were observed w
hen applying the external voltage to the Shottky barrier. The effect i
s explained taking into account the ionization of free excitons by the
electric field and voltage induced variation of the barrier width. Th
e value of ionization electric field for free exciton E-0 = 10(5) V/cm
is estimated.