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US 8,507,901 B2Granted
Organic material and electrophotographic device
AssigneeMerck Patent GmbH
InventorJunyou Pan
Life of this patent
Estimating the term…
Abstract
The invention relates to an electronic device, particularly photoreceptor or electrophotographic device, comprising an organic function material, which comprises an electron transport component and a hole trap component, to an organic material, which is a mixture or a copolymer comprising an electron transport component and a hole trap component, its use as charge transport material in a photoreceptor or electrophotographic device, especially of the positive charging type, and to electronic devices comprising such a material.
Claims32
An electronic device comprising
- an electrode,
- a functional layer having charge transport property and being provided on the electrode,
- wherein the functional layer comprises a functional material comprising an electron transport component and a hole trap component, wherein the HOMO (highest occupied molecular orbital) of the hole trap component is at least 0.3eV higher than the HOMO of the electron transport component, and the concentration of the hole trap component in the functional material is ≦4 mol %, said electronic device being non-electroluminescent.
Dependencies are inferred from the claim text.