Material for organoelectro-luminescence device and use thereof
AssigneeToyo Ink Manufacturing Co., Ltd.
InventorsMichiko Tamano, Toshio Enokida, Toshikazu Onikubo, Satoshi Okutsu
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Abstract
A hole-injecting material for an organic EL device, having excellent hole-injecting capability and durability and having the formula [I], [II] or [III] specified in claim 1, and an organic electroluminescence device obtained by forming either a light-emitting layer or a plurality of organic compound thin layers including the light-emitting layer between a pair of electrodes composed of a cathode and an anode, wherein at least one layer contains the above material.
Claims8
An organic electroluminescence device obtained by forming either a light-emitting layer or a plurality of organic compound thin layers including the light-emitting layer between a pair of electrodes composed of a cathode and an anode, wherein at least one layer contains a compound having the formula (I), (II) or (III), ##STR102## wherein each of R.sup.1 to R.sup.6 is independently a non-substituted methyl or ethyl group, a substituted methyl or ethyl group, and each of X.sup.1 to X.sup.6 is independently an oxygen atom or a sulfur atom, or each of X.sup.1 to X.sup.6 is independently a nitrogen atom to which a hydrogen atom, methyl group or ethyl group is bonded, ##STR103## wherein each of R.sup.1, R.sup.2 and R.sup.4 to R.sup.11 is independently a non-substituted methyl or ethyl group, a substituted methyl or ethyl group, each of X.sup.1 to X.sup.11 is independently an oxygen atom, a sulfur atom or a nitrogen atom to which a hydrogen atom, methyl group or ethyl group is bonded, and A.sup.1 is a chemically rational organic residue which is composed of C, H and O, or is composed of C, H, O and S, and has a molecular weight of 500 or less, ##STR104## wherein each of R.sup.1, R.sup.2, R.sup.4 to R.sup.11 and R.sup.13 to R.sup.17 is independently a non-substituted methyl or ethyl group, a substituted methyl or ethyl group, each of X.sup.1 to X.sup.18 is independently an oxygen atom, a sulfur atom or a nitrogen atom to which a hydrogen atom, methyl group or ethyl group is bonded, and A.sup.2 is a chemically rational organic residue which is composed of C, H and O, or is composed of C, H, O and S, and has a molecular weight of 500 or less,
- the thickness of each layer being in the range of from 10 nm to 0.2 .mu.m.
Dependencies are inferred from the claim text.