Efficient Organic EL Devices with New Electron Transport Materials

Abstract

Highly Efficient EL devices were obtained by the use of new electron transport materials. The efficiency over 15 cd/A was achieved in the light blue region. Furthermore, the driving voltage dramatically decreased, and the luminance of 307 nit was measured at a very low voltage of 3.5 V. As a result, the peak luminous efficiency of 13 1lm/W was successfully obtained at a luminance of 307 nit.