| abstract |
In an organic luminescence device formed of one or plural layers of organic films between an anode and a cathode, at least one layer is any one of a luminescence layer, an electron injection layer and an electron-transporting layer and is formed of at least a spiro compound of formula (I-a) or (I-b) having a carbon atom or a silicon atom as a spiro atom and having four ring structures including at least one nitrogen atom-containing ring structure. By the use of the spiro compound of the formula (I-a) or (I-b), the resultant organic luminescence device produces a high-luminance fluorescent luminescence at a low voltage for a long period of time. |