Organic devices, organic electroluminescent devices and organic solar cells
AssigneesJunji Kido, Rohm Co., Ltd., Mitsubishi Heavy Industries, Ltd.
InventorsJunji Kido, Toshio Matsumoto, Takeshi Nakada
Life of this patent
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Abstract
An organic device, including an organic compound having charge-transporting ability (i.e., transporting holes and/or electrons) and/or including organic light emissive molecules capable of emitting at least one of fluorescent light or phosphorescent light, has a charge transfer complex-contained layer including a charge transfer complex formed upon contact of an organic hole-transporting compound and molybdenum trioxide via a manner of lamination or mixing thereof, so that the organic hole-transporting compound is in a state of radical cation (i.e., positively charged species) in the charge transfer complex-contained layer.
Claims9
An organic device including an organic charge-transporting compound for transporting holes or electrons and/or organic light emissive molecules capable of emitting at least one of fluorescent light and phosphorescent light, said organic device comprising:
- a charge transfer complex-contained layer having a charge transfer complex formed upon contact of an organic hole-transporting compound and molybdenum trioxide via a manner of lamination or mixing, wherein at least the molybdenum trioxide is deposited via resistive heating in a molar ratio of about 5:1 relative to the organic hole-transporting compound, and wherein the organic hole-transporting compound consists essentially of alpha-NPD;
- wherein the organic hole-transporting compound is in a state of radical cations, and forms a layer in the charge transfer complex-contained layer,
- wherein the charge transfer complex-contained layer, and a layer in which an organic electron-transporting compound is in a state of radical anions by a radical-anion generating means, are laminated, and
- wherein an interfacial layer is formed between the layer in which the organic hole-transporting compound is in a state of radical cations and the layer in which the organic electron-transporting compound is in a state of radical anions, and functions as a hole current-electron current conversion layer.
A multi-photon emission organic electroluminescent device having at least two light emissive units consisting of an organic charge-transporting compound for transporting holes and/or electrons as well as an organic light emissive molecule capable of emitting at least one of fluorescent light and phosphorescent light, said multi-photon emission organic electroluminescent device comprising:
- a hole current-electron current conversion layer formed upon lamination of:
- a charge transfer complex-contained layer including a organic hole-transporting compound and molybdenum trioxide contacting each other by a manner of lamination or mixing, wherein the organic hole-transporting compound consists essentially of alpha-NPD and at least the molybdenum trioxide is deposited via resistive heating in a molar ratio of 5:1 relative to the organic hole-transporting compound, leading to the charge transfer complex-contained layer wherein the hole-transporting compound is in a state of radical cations, and forms a layer, and
- a layer wherein an electron-transporting compound is in a state of radical anions generated by a radical anion generation means,
- wherein an interfacial layer is formed between the layer in which the organic hole-transporting compound is in a state of radical cations and the layer in which the organic electron-transporting compound is in a state of radical anions, and functions as the hole current-electron current conversion layer, and
- wherein the hole current-electron current conversion layer works as a charge generation layer in the multi-photon emission organic electroluminescent device.
An organic device having a layer structure on a substrate in the following deposition sequence:
- (A) an anode;
- (B) an anode-adjacent layer consisting of an MoO3;
- (C) a layer of an organic hole-transporting compound consisting essentially of alpha-NPD;
- (D) a layer structure mainly consisting of organic compounds;
- (E) a cathode layer;
- wherein the anode-adjacent layer is prepared via resistive heating method and is deposited in a molar ratio of 5:1 relative to the organic hole-transporting compound, and an interfacial layer between (B) and (C) layers is a charge transfer complex contained layer, thus the organic hole-transporting compound is in a state of radical cations, resulting from the contact of the MoO3 in (B) layer and the organic hole-transporting compound in (C) layer,
- wherein the (D) layer structure is arranged to contact the (E) cathode layer, and Li is mixed with Alq in the (D) layer structure at a molar ratio of approximately 1:1, and
- wherein Alq is in a state of radical anions by Li, and the (D) layer structure functions as an electron injection layer.
Dependencies are inferred from the claim text.