▎ 摘　　要

NOVELTY - The material has a graphene sulfate (GSP)-slope whose potential gradient of the surface potential of the deposition film of the material is 20 mv/nm or more. The material has three substituents selected from chain alkyl groups of 2-5 carbon atoms and cycloalkyl groups of 6-12 carbon atoms. The chain alkyl group is a t-boutyl group. The ratio of carbon atoms to be combined with SP3 hybrid orbit of carbon atoms in molecules is 23% or more and 55% or less. The material is arylamine. The condensate aromatic hydrocarbon ring is a condensed aromatic ring having one ring, is a condensed aromatic ring having two rings, or is a condensate aromatic point having three rings, when the material has a condensate aromatic hydrocarbon ring. The material has a fluoren skeleton of two or less fluoren in the molecule. USE - Material for hole transport layer of light emitting devices for use in lighiting device of electronic device (all claimed) e.g. TV device, desktop type or notebook type personal computer, pachinko game machine, digital video cameras, digital picture frames, portable game consoles, smart phones, wrist watch-type terminals, portable information terminals, and sound reproducing devices. ADVANTAGE - The organic semiconductor device has low driving voltage. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: a light emitting device; an electronic device; and a lighiting device. DESCRIPTION OF DRAWING(S) - The drawings show the schematic diagrams showing a light emitting device. 10First electrode 20Carrier injection layer 30Second electrode 40Light emitting layer 50Electroluminescence layer