A photonic structure for "white" light generation by phosphors under the
excitation of a LED. The photonic structure mounts the LED and an
optically transparent matrix having dispersed therein phosphors which will
emit light under the excitation of the radiation of the LED. The
transparent matrix may include nanoparticles for matching the index of
refraction of the material of the matrix to that of the light generating
phosphors. The matrix material may be readily formed by molding and formed
into a variety of shapes including lenses for focusing the emitted light.
A large number of the photonic structures may be arranged on a substrate
to provide even illumination or other purposes. The phosphors dispersed in
the matrix are preferably nanocrystalline.
