Tandem OLED having an organic intermediate connector
First Claim
1. A tandem OLED comprising:
- a) an anode;
b) a cathode;
c) at least two electroluminescent units disposed between the anode and the cathode, wherein each of the electroluminescent units includes at least one hole-transporting layer and one organic light-emitting layer;
d) an intermediate connector disposed between adjacent electroluminescent units, wherein the intermediate connector includes an n-doped organic layer and an electron-accepting layer being disposed closer to the cathode than the n-doped organic layer, wherein the electron-accepting layer has a thickness range of from 3 nm to 100 nm and having one organic material having a molecular weight greater than 350, and having a reduction potential greater than −
0.5 V vs. a Saturated Calomel Electrode, and wherein the n-doped organic layer is in direct contact with the electron-accepting layer; and
e) the material in the electron-accepting layer consists of a chemical compound of the following formula;
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Accused Products
Abstract
A tandem OLED includes an anode and a cathode. The OLED also includes at least two electroluminescent units disposed between the anode and the cathode, wherein each of the electroluminescent units includes at least one hole-transporting layer and one organic light-emitting layer. An intermediate connector is disposed between adjacent electroluminescent units, wherein the intermediate connector includes an n-doped organic layer and an electron-accepting layer, the electron-accepting layer being disposed closer to the cathode than the n-doped organic layer, and wherein the electron-accepting layer includes one or more organic materials, each having a reduction potential greater than −0.5 V vs. a Saturated Calomel Electrode, and wherein the one or more organic materials constitute more than 50% by volume of the electron-accepting layer.
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Citations
11 Claims
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1. A tandem OLED comprising:
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a) an anode; b) a cathode; c) at least two electroluminescent units disposed between the anode and the cathode, wherein each of the electroluminescent units includes at least one hole-transporting layer and one organic light-emitting layer; d) an intermediate connector disposed between adjacent electroluminescent units, wherein the intermediate connector includes an n-doped organic layer and an electron-accepting layer being disposed closer to the cathode than the n-doped organic layer, wherein the electron-accepting layer has a thickness range of from 3 nm to 100 nm and having one organic material having a molecular weight greater than 350, and having a reduction potential greater than −
0.5 V vs. a Saturated Calomel Electrode, and wherein the n-doped organic layer is in direct contact with the electron-accepting layer; ande) the material in the electron-accepting layer consists of a chemical compound of the following formula; - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification