摘要:
An electroluminescent device in which there is an electroluminescent which comprises a complex of general formula (Lα)nM1M2 or of general formula (Lα)n M1M2 (Lp), where Lp is a neutral ligand and where M1 is a rare earth, transition metal, lanthamide or an actimide, M2 is a non rare earth metal, Lαis an organic complex and n is the combined valence state of M1 and M2.
摘要翻译:一种电致发光器件,其中存在电致发光,其包含通式(IIa)M 1 M 2 M 2的复合物, / SUB>或通式(Lαα)n M 1 M 2(L p) 其中L SUB>是中性配体,其中M 1是稀土,过渡金属,lanthamide或actimide,M 2, / SUB>是非稀土金属,Lα是有机络合物,n是M 1和M 2的组合价态, 。
摘要:
Embodiments of electroluminescent devices of the invention are preferably formed of a transparent anode; a layer of a hole transporting material; a layer of an electroluminescent material; a layer of an electron transporting material; a layer of lithium quinolate or of a substituted lithium quinolate e.g. of thickness less than 7 nm; and a metal cathode. The layer of the metal quinolate is preferably about 0.3-0.5 nm in thickness. In an embodiment there is provided an organic light-emitting diode having a cathode, an electron injection layer in contact with the cathode and an electron transport layer in contact with the electron injection layer and comprising aluminium, zirconium or hafnium quinolate or a mixture thereof or a mixture of any of them with a quinolate of a metal of group 1, 2, 3, 13 or 14 of the periodic table, wherein the electron injection layer comprises lithium quinolate or a substituted lithium quinolate having one or more substituents selected from C1-C4 alkyl, monocyclic aryl or aralk-(C1-C4)-yl, aryloxy or fluoro subject to the proviso that not more than one substituent is C2-C4 alkyl, aralkyl or aryloxy or an oligomer thereof, and wherein the electrode is of aluminium. Such devices may be made by a method including the steps of forming lithium quinolate or a substituted lithium quinolate having one or more substituents selected from C1-C4 alkyl, monocyclic aryl or aralk-(C1-C4)-yl, aryloxy or fluoro subject to the proviso that not more than one substituent is C2-C4 alkyl, aralkyl or aryloxy by reacting a lithium alkyl or alkoxide with 8-hydroxyquinoline or a derivative thereof in a solvent comprising acetonitrile, and depositing lithium quinolate or a substituted lithium quinolate formed as described above on a cathode of the device to provide an electron injection layer.
摘要:
Electroluminescent devices are disclosed comprising a transparent anode; a layer of a hole transporting material; a layer of an electroluminescent material; a layer of an electron transporting material; a layer of a substituted lithium quinolate; and a metal cathode. The electroluminescent device may be an organic light-emitting diode having a cathode, an electron injection layer in contact with the cathode and an electron transport layer in contact with the electron injection layer and comprising aluminum, zirconium or hafnium quinolate or a mixture thereof or a mixture of any of them with a quinolate of a metal of group 1, 2, 3, 13 or 14 of the periodic table. Such devices may be made by the steps of forming a substituted lithium quinolate having one or more substituents and depositing the substituted lithium quinolate on a cathode of the device to provide an electron injection layer.
摘要:
In an OLED there is a reflectivity influencing layer (27) which is preferably semi-absorbent and in embodiments is dark coloured or black which is formed of a sublimable organometallic compound. The reflectivity influencing layer is formed between an electrode (29 or 22) and a light-emitting layer (25).
摘要:
The invention provides new compounds of the formula I, II or III. These compounds can be used as electron transport materials in optical light emitting diodes (OLEDs). The compounds of the formula I, II and III are as follows:
摘要:
An electroluminescent composition is provided comprising: (a) a compound of the general chemical formula (I): wherein M is lithium, sodium, potassium, rubidium, caesium, beryllium, magnesium, calcium, strontium, barium, copper, silver, gold, zinc, boron, aluminum, gallium, indium, germanium, tin, antimony, lead, manganese, iron, ruthenium, osmium, cobalt, rhodium, iridium, nickel, palladium, platinum, cadmium or chromium; n is the valence of M; and R1, R2 and R3 can be the same or different, and are selected from hydrogen, a substituted or unsubstituted aliphatic group, a substituted or unsubstituted aromatic, heterocyclic or polycyclic ring structure, a fluorocarbon, a halogen or a nitrile group; and (b) a suitable dopant. The composition may be used in forming electroluminescent devices.
摘要翻译:提供一种电致发光组合物,其包含:(a)一般化学式(I)的化合物:其中M为锂,钠,钾,铷,铯,铍,镁,钙,锶,钡,铜,银,金, 锌,硼,铝,镓,铟,锗,锡,锑,铅,锰,铁,钌,锇,钴,铑,铱,镍,钯,铂,镉或铬; n是M的化合价; R 1,R 2和R 3可以相同或不同,并且选自氢,取代或未取代的脂族基团,取代或未取代的芳香族,杂环或多环结构,碳氟化合物,卤素或腈基; 和(b)合适的掺杂剂。 该组合物可用于形成电致发光器件。
摘要:
An improved electroluminescent device has a layer of a first electroluminescent metal complex or organo metallic complex and a layer of a second metal complex or organo metallic complex in which the band gap of the metal in the second electroluminescent metal complex or organo metallic complex is larger than the band gap of the metal in the first electroluminescent metal complex or organo metallic complex.
摘要:
In OLEDs, improved efficiency is obtained by using compounds of formula [Ar](CH═CH—R1)n wherein n is an integer from 1 to 4; [Ar] is a polycyclic aromatic or heteroaromatic scaffold optionally substituted with one or more alkyl or alkoxy groups; and R1 is a 5-membered heteroaryl group optionally substituted with methyl, methoxy, aryl or heteroaryl, or is phenyl or naphthyl optionally substituted with methyl, methoxy, trifluoromethyl or cyano or is biphenyl or substituted biphenyl. The compounds are believed to be novel and can be made by condensing a compound of formula wherein [Ar] and n are as defined above with a compound of formula [Ar](CH3)nR1CHO in the presence of an acid catalyst e.g. an anhydride of an organic acid.