Merck KGaA announced today that it is launching several new OLED materials, including a blue singlet emitter (SEB series) that features ultra deep blue color coordinates. Measured in solvent, this dopant shows a color as deep as CIE(x;y) 0.15/ 0.09 with a full width half maximum (FWHM) of only 54 nm.
Merck said that in a bottom emission OLED device, an external quantum efficiency (EQE) in excess of 5.6% and color coordinates of 0.15/ 0.10 can be achieved with this new material. The stable material performance at high driving current and high temperatures makes the material ideal for passive matrix based automotive and mobile display applications. In active matrix top emission devices, the material allows panel-makers to achieve a high NTSC color gamut while drastically reducing power consumption and increasing product lifetime.
Merck also has developed a new light blue dopant for two color white or monochrome OLED applications. At CIE(x;y) 0.14/0.27, this material shows outstanding efficiency (7% EQE and 12.5 cd/A @ 1000cd/m²) and excellent lifetime above 36000h at 1000cd/m² for a basic bottom emission device structure.
