Method of fabricating an optoelectronic device having a bulk heterojunction
First Claim
1. A method of fabricating an optoelectronic device, comprising:
- depositing a first layer having protrusions over a first electrode, wherein the first layer comprises a first organic small molecule material;
depositing a second layer on the first layer such that the second layer is in physical contact with the first layer;
wherein the smallest lateral dimension of the protrusions is between 1 to 5 times the exciton diffusion length of the first organic small molecule material; and
depositing a second electrode over the second layer to form the optoelectronic device.
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Abstract
A method of fabricating an optoelectronic device comprises: depositing a first layer having protrusions over a first electrode, in which the first layer comprises a first organic small molecule material; depositing a second layer on the first layer such that the second layer is in physical contact with the first layer; in which the smallest lateral dimension of the protrusions are between 1 to 5 times the exciton diffusion length of the first organic small molecule material; and depositing a second electrode over the second layer to form the optoelectronic device. A method of fabricating an organic optoelectronic device having a bulk heterojunction is also provided and comprises: depositing a first layer with protrusions over an electrode by organic vapor phase deposition; depositing a second layer on the first layer where the interface of the first and second layers forms a bulk heterojunction; and depositing another electrode over the second layer.
83 Citations
27 Claims
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1. A method of fabricating an optoelectronic device, comprising:
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depositing a first layer having protrusions over a first electrode, wherein the first layer comprises a first organic small molecule material;
depositing a second layer on the first layer such that the second layer is in physical contact with the first layer;
wherein the smallest lateral dimension of the protrusions is between 1 to 5 times the exciton diffusion length of the first organic small molecule material; and
depositing a second electrode over the second layer to form the optoelectronic device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification