Hybrid organic-inorganic GaN LED based color downconversion for displays

Abstract

Hybrid organic-inorganic semiconductor structures, which consist of a GaN-based light emitting diode (LED) coupled with an organic thin film, are promising for color conversion applications. Upon operation, the organic film absorbs the electroluminescence and emits in the green to red, resulting in color downconversion. The GaN LED is used as a skeleton to which an appropriate organic layer is added for the desired color. To form a hybrid unit, the LED is brought into proximity contact with the organic film deposited on a glass substrate so that after absorption of the electroluminescence, the fluorescence is collected through the glass. Hybrid organic-inorganic nitride-based LEDs are promising as units for small full-color displays.