INTERMEDIATE CONNECTOR FOR STACKED ORGANIC LIGHT EMITTING DEVICES
First Claim
1. A device, comprising:
- an anode;
a cathode;
an intermediate connector disposed between the anode and the cathode, the intermediate connector comprising;
a first metal having a work function lower than 4.0 eV; and
a second metal having a work function lower than 5.0 eV;
wherein the work function of the first metal is at least 0.5 eV less than the work function of the second metal;
a first organic layer disposed between the anode and the intermediate connector, the first organic layer further comprising a first organic emissive material;
a second organic layer disposed between the intermediate connector and the cathode, the second organic layer comprising a plurality of sublayers, including a first sublayer of the second organic layer and a second sublayer of the second organic layer;
the first sublayer of the second organic layer being in direct contact with the intermediate connector, and comprising a material having the structure;
wherein R1-R6 are independently chosen from the group consisting of hydrogen, halo, nitrile (—
CN), nitro (—
NO2), sulfonyl (—
SO2R), sulfoxide (—
SOR), sulfonamide (—
SO2NR), sulfonate (—
SO3R), trifluoromethyl (—
CF3), ester (—
CO—
OR), amide (—
CO—
NHR or —
CO—
NRR′
), straight-chain or branched (substituted or unsubstituted) C1-C12 alkoxy, straight-chain or branched (substituted or unsubstituted) C1-C12 alkyl, aromatic or non-aromatic (substituted or unsubstituted) heterocyclic, substituted or unsubstituted aryl, mono- or di-(substituted or unsubstituted)aryl-amine, (substituted or unsubstituted)alkyl-(substituted or unsubstituted)aryl-amine, and substituted or unsubstituted electron withdrawing substituent groups, where R and R′
are independently selected from substituted or unsubstituted C1-C60 alkyl, substituted or unsubstituted aryl, substituted or unsubstituted 5-7 membered heterocyclic, where substituted C1-C60 alkyl, aryl and heterocyclic are optionally substituted with one or more of amine, amide, ether and ester groups, and where aryl groups includes phenyl, biphenyl, terphenyl, naphthyl, anthracenyl, tetracenyl, pentacenyl, perylenyl and coronenyl, which are singly or multiply substituted or unsubstituted; and
the second sublayer of the second organic layer comprising a second organic emissive material wherein the first metal is in direct contact with the first sublayer of the second organic layer.
1 Assignment
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Accused Products
Abstract
A device is provided, having an anode, a cathode, and an intermediate connector disposed between the anode and the cathode. A first organic layer including an emissive sublayer is disposed between the anode and the intermediate connector, and a second including an emissive sublayer is disposed between the intermediate connector and the cathode. The intermediate connector includes a first metal having a work function lower than 4.0 eV and a second metal having a work function lower than 5.0 eV. The work function of the first metal is at least 0.5 eV less than the work function of the second metal. The first metal is in contact with a sublayer of the second organic layer that includes a material well adapted to receive holes from a low work function metal.
13 Citations
14 Claims
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1. A device, comprising:
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an anode; a cathode; an intermediate connector disposed between the anode and the cathode, the intermediate connector comprising; a first metal having a work function lower than 4.0 eV; and a second metal having a work function lower than 5.0 eV; wherein the work function of the first metal is at least 0.5 eV less than the work function of the second metal; a first organic layer disposed between the anode and the intermediate connector, the first organic layer further comprising a first organic emissive material; a second organic layer disposed between the intermediate connector and the cathode, the second organic layer comprising a plurality of sublayers, including a first sublayer of the second organic layer and a second sublayer of the second organic layer; the first sublayer of the second organic layer being in direct contact with the intermediate connector, and comprising a material having the structure; wherein R1-R6 are independently chosen from the group consisting of hydrogen, halo, nitrile (—
CN), nitro (—
NO2), sulfonyl (—
SO2R), sulfoxide (—
SOR), sulfonamide (—
SO2NR), sulfonate (—
SO3R), trifluoromethyl (—
CF3), ester (—
CO—
OR), amide (—
CO—
NHR or —
CO—
NRR′
), straight-chain or branched (substituted or unsubstituted) C1-C12 alkoxy, straight-chain or branched (substituted or unsubstituted) C1-C12 alkyl, aromatic or non-aromatic (substituted or unsubstituted) heterocyclic, substituted or unsubstituted aryl, mono- or di-(substituted or unsubstituted)aryl-amine, (substituted or unsubstituted)alkyl-(substituted or unsubstituted)aryl-amine, and substituted or unsubstituted electron withdrawing substituent groups, whereR and R′
are independently selected from substituted or unsubstituted C1-C60 alkyl, substituted or unsubstituted aryl, substituted or unsubstituted 5-7 membered heterocyclic, wheresubstituted C1-C60 alkyl, aryl and heterocyclic are optionally substituted with one or more of amine, amide, ether and ester groups, and where aryl groups includes phenyl, biphenyl, terphenyl, naphthyl, anthracenyl, tetracenyl, pentacenyl, perylenyl and coronenyl, which are singly or multiply substituted or unsubstituted; and the second sublayer of the second organic layer comprising a second organic emissive material wherein the first metal is in direct contact with the first sublayer of the second organic layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A consumer product comprising a device, the device further comprising:
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an anode; a cathode; an intermediate connector disposed between the anode and the cathode, the intermediate connector comprising; a first metal having a work function lower than 4.0 eV; and a second metal having a work function lower than 5.0 eV; wherein the work function of the first metal is at least 0.5 eV less than the work function of the second metal; a first organic layer disposed between the anode and the intermediate connector, the first organic layer further comprising a first organic emissive material; a second organic layer disposed between the intermediate connector and the cathode, the second organic layer comprising a plurality of sublayers, including a first sublayer of the second organic layer and a second sublayer of the second organic layer; the first sublayer of the second organic layer being in direct contact with the intermediate connector, and comprising a material having the structure; wherein R1-R6 are independently chosen from the group consisting of hydrogen, halo, nitrile (—
CN), nitro (—
NO2), sulfonyl (—
SO2R), sulfoxide (—
SOR), sulfonamide (—
SO2NR), sulfonate (—
SO3R), trifluoromethyl (—
CF3), ester (—
CO—
OR), amide (—
CO—
NHR or —
CO—
NRR′
), straight-chain or branched (substituted or unsubstituted) C1-C12 alkoxy, straight-chain or branched (substituted or unsubstituted) C1-C12 alkyl, aromatic or non-aromatic (substituted or unsubstituted) heterocyclic, substituted or unsubstituted aryl, mono- or di-(substituted or unsubstituted)aryl-amine, (substituted or unsubstituted)alkyl-(substituted or unsubstituted)aryl-amine, and substituted or unsubstituted electron withdrawing substituent groups, whereR and R′
are independently selected from substituted or unsubstituted C1-C60 alkyl, substituted or unsubstituted aryl, substituted or unsubstituted 5-7 membered heterocyclic, wheresubstituted C1-C60 alkyl, aryl and heterocyclic are optionally substituted with one or more of amine, amide, ether and ester groups, and where aryl groups includes phenyl, biphenyl, terphenyl, naphthyl, anthracenyl, tetracenyl, pentacenyl, perylenyl and coronenyl, which are singly or multiply substituted or unsubstituted; and the second sublayer of the second organic layer comprising a second organic emissive material wherein the first metal is in direct contact with the first sublayer of the second organic layer.
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Specification