Method of using predoped materials for making an organic light-emitting device
AssigneeEastman Kodak Company
InventorJianmin Shi
Life of this patent
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Abstract
A method of depositing a predoped organic light emitting material to form a layer in an organic light-emitting device, includes providing a homogeneous solid mixture capable of being deposited which includes at least one organic light-emitting host material and at least one luminescent organic dopant material; and depositing the homogeneous solid mixture to form a layer in an organic light emitting device.
Claims28
A method of depositing a predoped organic light emitting material to form a layer in an organic light-emitting device, comprising the steps of:
- (a) providing a homogeneous solid mixture capable of being deposited which includes at least one organic light-emitting host material and at least one luminescent organic dopant material;
- and
- (b) depositing the homogeneous solid mixture to form a layer in an organic light emitting device.
A method of depositing a predoped material to form a hole transporting layer in an organic light-emitting device, comprising the steps of:
- (a) providing a homogeneous solid mixture capable of being deposited which includes at least one organic hole-transporting host material and at least one dopant material;
- and
- (b) applying heat to evaporate the homogeneous solid mixture to form a hole transporting layer in an organic light emitting device.
A method of depositing a predoped material to form an electron-transporting layer in an organic light-emitting device, comprising the steps of:
- (a) providing a homogeneous solid mixture capable of being deposited which includes at least one organic electron-transporting host material and at least one electron-transporting organic dopant material;
- and
- (b) applying heat to evaporate the homogeneous solid mixture to form an electron-transporting layer in an organic light emitting device.
A method of making an organic light-emitting device having at least one doped organic layer, the method comprising the steps of:
- (a) providing a light-transmissive substrate;
- (b) forming a light-transmissive anode over the substrate;
- (c) sequentially forming a multilayer organic electroluminescent (EL) medium structure over the anode;
- (d) forming an cathode over the organic EL medium structure;
- (e) providing a homogeneous solid mixture of a predoped organic material which includes at least one organic host material and at least one organic dopant material selected for forming the at least one doped organic layer of the organic EL medium structure;
- and
- (f) forming the at least one doped organic layer by evaporating the homogeneous solid mixture of the predoped organic material from a evaporation deposition source.
A method of making an organic light-emitting device having a doped light-emitting layer, the method comprising the steps of:
- (a) providing a light-transmissive substrate;
- (b) forming a light-transmissive anode over the substrate;
- (c) forming an organic hole-transporting layer over the anode;
- (d) providing a homogeneous solid mixture of a predoped organic light-emitting material which includes at least one organic light-emitting host material and at least one organic luminescent dopant material;
- (e) forming a doped organic light-emitting layer over the hole-transporting layer by depositing the homogeneous solid mixture of the predoped organic light-emitting material from an evaporation deposition source;
- (f) forming an organic electron-transporting layer over the light-emitting layer;
- and
- (g) forming a cathode over the electron-transporting layer.
Dependencies are inferred from the claim text.