An electroluminescent device in which the intensity of the light emission is
enhanced
by photopumping with radiation from a radiation source of a suitable photon energy.
The photopumping radiation from the radiation source interacts with the wide band-gap
semiconductor forming the electroluminescent device so as to, when the device is
electrically biased to provide light emission, generate additional carriers that
enhance the intensity of the light emission from a light-emitting element present
in the wide band-gap semiconductor. A waveguide structure may be integrated into
a substrate carrying the electroluminescent device for transferring the radiation
from the radiation source to the electroluminescent device. Multiple electroluminescent
devices may be arranged in pixels for forming a flat panel display in which certain
of the devices are photopumped with radiation.