Hybrid organic-inorganic light-emitting diodes
O. N. Ermakov
1,
M. G. Kaplunov2 (

),
O. N. Efimov
2, I. K. Yakushchenko
2,
M. Yu. Belov
2, M. F. Budyka
2
1Joint-Stock Scientific and Technological Co
Sapphire,
Moscow, Russia.
2Institute of Problems of Chemical Physics, Russian Academy
of Sciences, Chernogolovka, Moscow Region, Russia.
Recent progress in Group III nitrides technology has enabled the
development of bright blue light-emitting diodes (LEDs) with high
luminous efficiency. Nevertheless, the achievement of full color
displays from the Group III nitrides is quite a difficult task. A
perspective way to obtain a wide range of colors from such system
is a hybrid organic - inorganic LED in which the
electroluminescence from Group III nitride crystal provides the
blue component and, simultaneously, serves as the pump for
exciting the green and red photoluminescence of organic
luminofores. We demonstrate such hybrid LEDs based on GaN and
InGaN systems with numerous organic luminofores providing blue,
green, red and white colors with high luminous efficiency. Color
of the emitted light from the GaN based LED can be changed by
varying the current through the device due to change in the
relation between the UV and visible components of GaN
electroluminescence.