| abstract |
Charge transport containing a charge transport material comprising a charge transport oligoaniline, or a charge transport organic material comprising the charge transport material and a charge accepting dopant material, and at least one polymer selected from polyimide and a polyimide precursor Varnish, charge transporting thin film and organic EL device using the same. Thereby, it is possible to form a thin film having very few defects, high uniformity and flatness, and excellent in mechanical strength, heat resistance and transparency, and particularly when used in an organic EL element. Excellent EL characteristics such as low driving voltage, high luminous efficiency, and long life can be realized. |