Use of organic materials having high nonionic charge carrier mobility
AssigneeBASF SE
InventorsLukas Haussling, Karl-Heinz Etzbach, Karl Siemensmeyer, Wolfgang Paulus, Dieter Meissner, Christina Antonius, Karsten Engel, Dietrich Haarer, Sundeep Kumar, Peter Schuhmacher
Life of this patent
Estimating the term…
Abstract
Disclosed the use of organic materials having a specific conductivity of less than 10.sup.-2 S/cm and a nonionic charge carrier mobility greater than 10.sup.-4 cm.sup.2 /Vs as charge transport medium, with the proviso that an increase in the charge carrier concentration by a factor of 10 or more is not caused in this organic material by light absorption, and corresponding electrochemical cells.
Claims22
A method of transporting charge carriers from a charge carrier generating medium to a charge carrier receiving medium comprising transporting the charge carriers via an organic, charge transporting material, said material having a specific conductivity of less than 10.sup.-2 S/cm and a nonionic charge carrier mobility of greater than 10.sup.-4 cm.sup.2 /Vs when used as a charge transport medium, with the proviso that an increase in the charge carrier concentration by a factor of 10 or more is not caused in said organic, charge transporting material by light absorption.
An electrochemical cell comprising at least one charge transport medium, which functions as the cell's electrolyte, and at least two electrodes, wherein the electrolyte forming the charge transport medium comprises an organic material having a specific conductivity of less than 10.sup.-2 S/cm and a nonionic charge carrier mobility of greater than 10.sup.-4 cm.sup.2 /Vs, with the exception of electrochemical cells containing hexapentyloxytriphenylene or hexahexylthiotriphenylene as charge transport medium and containing transparent glass plates with an electroconductive coating as electrodes.
Dependencies are inferred from the claim text.