Organic electroluminescence device

An organic electroluminescence device comprising a pair of electrodes, at least one of which is transparent or semitransparent, and at least one organic layer formed between the electrodes, the organic layer containing a hole transporting material and a light emitting material in the same or different layer, wherein the hole transporting material contains at least one polysilane whose main chain skeleton is composed of a repeating unit represented by the following general formula (1):

• ##STR10## wherein R.sup.1 and R.sup.2 independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group, Ar.sub.1 represents a substituted or unsubstituted arylene group and Ar.sub.2 represents a substituted or unsubstituted aryl group and a repeating unit represented by the following general formula (2):
• ##STR11## wherein R.sub.3 and R.sub.4 independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group, and the polysilane satisfying the expression 0.2.ltoreq.z.ltoreq.1 where a ratio of the number of the repeating unit (1) and that of the repeating unit (2) to the total number of repeating units (1) and (2) are z and 1-z, respectively, the polysilane having a weight-average molecular weight of not less than 5000 and a hole drift mobility of 10.sup.-3 -10.sup.-1 cm.sup.2 /v/sec.