Patent ID: 6358633
Filing Date: 2002-03-19
Classification: C09K,H01L,Y10S,Y10T

Abstract:
An organic electroluminescent device constructed by providing at least an emitting layer using an organic material between a hole injection electrode and an electron injection electrode, characterized in that a dopant selected from coronene, rubicene, pyrene, benzpyrene, chrysene, ovalene, fluorocyclene, picene, triphenylene, aceanthrene, fluoranthene, acenaphthene, acenaphthylene, benzanthracene, naphthafluorene, naphthafluorenone, naphthapyrene, anthraquinone, rubrene peroxide, pentacene quinone, perylene quinone, naphthacene quinone, benzofluorenone, benzofluorene, anthrafluorene, benzperylene, benzpentacene, bispyrenyl propane, tetramethyl naphthacene, dibenzanthracene, pyrene quinone, perylene, and fluoracene, and derivatives of these compounds having a substituent group selected from â€”C6H5, â€”CH3, â€”C2H5, â€”C(CH3)3, â€”OCH3, â€”OCOCH3, â€”OH, â€”NH2, â€”N(CH3)2, â€”N(C6H5)2, â€”NC12H8, â€”NHCOCH3, â€”NH3, â€”CF3, â€”NO2, â€”CN, â€”COCH3, and â€”CO2C2H5, is doped into a host material in said emitting layer, and the difference between the highest occupied molecular orbital in the host material and the highest occupied molecular orbital in the dopant is in a range from âˆ’0.3 eV to +0.3 eV.