abstract |
(57) Abstract A transparent organic light emitting device (OLED) includes a transparent conductive layer (10a), an exciton block layer (10b), and the rest of the OLED (12). The transparent conductive layer (10a) functions as a cathode layer and can be formed from ITO, while the exciton block layer (10a) can be formed from a metal-doped organic electron injection layer. |