| abstract |
This invention relates to a charge-transporting varnish containing either a charge -transporting substance consisting of a charge-transporting oligoaniline or a charge-transporting organic material consisting of the charge-transporting substance and a charge- accepting dopant and at least one polymer selected from among polyimides and polyimide precursors; and charge-transporting thin films and organic EL devices, made by using the varnish. The varnish can give thin films which little suffer from defects and have high uniformity and flatness and excellent mechanical strengths, heat resistance, and transparency. In particular, the varnish realizes excellent EL characteristics such as low driving voltage, high emission efficiency, and long service life, when used in organic EL devices. |