The problem of the present invention is to provide a carbazole derivative which has an excellent heat resistance and can be formed into a film without crystallization. Also, a problem is to produce an organic semiconductor element, a light emitting element and an electronic device by employing the carbazole derivative. For the purpose, a novel carbazole derivative represented by following general formula (1) is provided: ##STR00001## (in the formula, I represents a core carbazole (G.sub.0) illustrated by general formula (2), Z represents an internally branched carbazole (G.sub.1 to G.sub.n-1) illustrated by general formula (3), E represents an end carbazole (G.sub.n) illustrated by general formula (4), n represents an integer showing generation number of dendrimer, X.sub.1 represents hydrogen, halogen, a cynano group, an alkyl group, an aryl group, a heterocyclic residue or the like, X.sub.2 and X.sub.3 in (G.sub.(n-m)-1) (provided, n-m.gtoreq.1) make a covalent bond with X.sub.4 in (G.sub.(n-m)), and each of R.sub.1 to R.sub.8 represents independently hydrogen, halogen, a cynano group, an alkyl group, a dialkylamino group, a diarylamino group, a heterocyclic residue or the like). ##STR00002##