NOVELTY - An indole derivative (I) is new.    USE - New indole derivative used for organic layer of organic electric device e.g. organic electroluminescent device, organic solar cell, organo photoreceptor drum and organic thin film transistor used in display device for terminal (all claimed).    ADVANTAGE - The organic electric device having the organic layer containing the indole derivative has low drive voltage, and high durability and luminous efficiency.    DETAILED DESCRIPTION - An indole derivative of formula (I) is new.    R1-R3,X=H, halo, or silyl, boron-containing group, germanium-containing group (all optionally substituted), or 1-60C alkyl, 1-60C alkoxy, 1-60C alkylamine, 1-60C arylamine, 1-60C alkylthio, 6-60C arylthio, 2-60C alkenyl, 2-60C alkynyl, 3-60C cycloalkyl, 6-60C aryl optionally substituted by deuterium, 8-60C aryl alkenyl, 5-60C heteroaryl or 5-60C heterocyclyl (all optionally substituted by halo, CN, NO2, or silyl, boron-containing group, germanium-containing group (all optionally substituted), 1-60C alkyl, 1-60C alkoxy, 1-60C alkylamine, 1-60C arylamine, 1-60C alkylthio, 2-60C alkenyl, 2-60C alkynyl, 3-60C cycloalkyl, 6-60C aryl optionally substituted by deuterium, 5-60C heterocyclyl, 5-60C heteroaryl, 6-60C aromatic ring, or 4-60C aliphatic ring (all optionally substituted by H, halo, optionally substituted aliphatic hydrocarbyl, optionally substituted aryl or heterocyclic aryl optionally substituted with sulfur, nitrogen, oxygen, phosphorus or silicon));    n=1-3;    m=3 or more;and    Ar1-Ar5=1-60C optionally substituted aryl or heteroaryl.    L= undefined    The indole derivative is substituted with two tertiary amine.    An INDEPENDENT CLAIM is included for organic electric device, which has organic layer containing the indole derivative.    DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view of organic electroluminescent device. (Drawing includes non-English language text)    Substrate (101)    Electrodes (102,108)    Hole implant layer (103)    Hole transport layer (104)    Light emitting layer (105)    Electron transport layer (106)    Electron injection layer (107)