Author_Institution :
Thin Films Laboratory, Department of Electrical, Electronic, and Telecommunication Engineering, of Chemical techniques, Automation and Mathematics models - DIEETCAM, University of Palermo
Abstract :
A high efficiency white light emitting diode (LED) was fabricated by generation of frequency downconversion from a GaN/InGaN blue LED. In place of conventional inorganic phosphors, a perylene-based dye was used for colour conversion. The resulting hybrid structure is analysed by focusing on the visual performance of the realised LEDs employing the most relevant photometric parameters of a light source. Preparation of the organic polymer is described as well. The thermal stability of the dye was investigated and a simple structure which avoids colour degradation is proposed.
