Organic charge transport layer, organic EL device, organic semiconductor device, and organic photoelectric device

An organic charge transport layer comprising an organic semiconductor material and an electret material,

• wherein the electret material is at least one selected from the group consisting of:
• polypropylene;
• polytetrafluoroethylene (PTFE);
• tetrafluoroethylene-hexafluoropropylene copolymer (FEP);
• fluorine-based copolymer containing a 2,2-bistrifluoromethyl-4,5-difluoro-1,3-dioxol structural unit represented by the following formula (1) and a tetrafluoroethylene structural unit represented by the following formula (2);
• and
• fluorine-based polymer containing a structural unit represented by the following formula (3)
• (in the formula (3), X represents a hydrogen atom, a fluorine atom, a chlorine atom, a trifluoromethyl group, or a trifluoromethoxy group, Y represents an oxygen atom, a difluoromethylene group, or a tetrafluoroethylene group, R1 and R2 each independently represent a fluorine atom, a trifluoromethyl group, or a pentafluoroethyl group and R1 and R2 may be linked to each other to form a 5-membered ring or a 6-membered ring containing 4 or more fluorine atoms, and n represents an integer of 1 or more).