NOVELTY - A carbazole compound (I) is new.    USE - New carbazole compound is used for organic electronic element e.g. organic electroluminescent device, organic solar cell, organophotoreceptor, organic transistor and illumination device for electronic device (all claimed).    ADVANTAGE - The organic electronic element formed using carbazole compound has excellent light-emitting efficiency, stability and durability.    DETAILED DESCRIPTION - A carbazole compound of formula (I) is new.    R1-R10=H, deuterium, halo, 6-60C aryl, fluorenyl, 6-60 aryl or 3-60C aliphatic or aromatic fused ring, 2-60C heterocyclyl optionally having O, N, S , Si or P, -LN(R')(R"), 1-50c alkyl, 2-20C alkylene, or 1-30C alkoxy 6-30C aryl, in which at least one of R1-R4 and R7-R10 are H;    or at least two of R1-R10=ring;    X,Y'=S, O, or -Si(R11)(R12);    R11,R12=H, 6-60C aryl, 1-50 alkyl or 2-60C heterocyclyl optionally having O, N, S, Si or P;    n,m=0 or 1;    m+n=1;    L=single bond, or 6-60C aryl, fluroenyl, 2-60C heterocyclyl optionally having O, N, S, Si or P, or divalent aliphatic hydrocarbyl (all optionally substituted by nitro, cyano, halo, 1-20C alkyl, 6-20C aryl, 2-20C heterocyclyl, 1-20C alkoxy or amino);    Ar1=2-60C heterocyclyl optionally having O, N, S, Si or P, 6-60C aryl, fluorenyl or -N(R')(R");and    R',R"=2-60C heterocyclyl optionally having O, N, S, Si or P, 6-60C aryl, or fluorenyl.    The alkyl, aryl, alkylene, alkynyl, aryl, heterocyclyl and fluorenyl of R1-R12, Ar1, R' and R" are optionally substituted by deuterium, halo, silyl, boron-type group and germanium-based group, cyano, nitro, 1-20C alkyl, 1-20C alkoxy, 2-20C alkenyl, alkylthio, 2-20C alkynyl, 3-20C cycloalkyl, 6-20C aryl or heterocyclyl. INDEPENDENT CLAIMS are included for the following:    (1) organic electronic element; and    (2) electronic device.    DESCRIPTION OF DRAWING(S) - The drawing shows schematic view of organic electroluminescent device. (Drawing includes non-English language text)    Substrate (110)    Anode (120)    Hole injection layer (130)    Hole transport layer (140)    Light-emitting layer (150)