We have fabricated white organic light emitting diodes. To obtain balanced white emission and improve the efficiency of devices, thin electron blocking layer (TEBL) was inserted between the emitting layers. We showed that the effective injection of electrons through the optimization of TEBL (α-NPD) embodied the balance of spectra and had a possibility of getting white emission. In a device with 0.3 nm α-NPD, it had a maximum power efficiency of 3.80 lm/w at 250 cd/m2, a luminance of 1200 cd/m2 at 100 mA/cm2 , and the CIE coordinates were (0.353, 0.357).
|Number of pages||3|
|Journal||Proceedings of International Meeting on Information Display|
|Publication status||Published - 2006|
|Event||5th International Meeting on Information Display - Seoul, Korea, Republic of|
Duration: 2005 Jul 19 → 2005 Jul 23
ASJC Scopus subject areas