abstract |
A composition including a first compound and a second compound having a predetermined chemical formula, a thin film including the composition, and the composition or thin film, including a low driving voltage, high luminous efficiency, high power efficiency, Provided is an organic light emitting device having high quantum efficiency and long life. A composition according to the present invention includes a first compound represented by the following chemical formula 1 and a second compound represented by the following chemical formula 2. (Chemical formula 1) Ar 1- (L 1 ) a1 -Ar 2 ... Chemical formula 1 (Chemical formula 2) Ar 11 - (L 11) a11 -Ar 12 ยทยทยท Formula 2 For the description of Ar 1 , Ar 2 , Ar 11 , Ar 12 , L 1 , L 11 , a1, and a11 in Chemical Formulas 1 and 2 , refer to the detailed description in the specification. [Selection] Figure 1 |