A series of novel thieno[3,2-c]pyridine-based RGBY phosphorescent Ir complexes have been synthesized and characterized. Solution-processable double-layered OLEDs fabricated with theses materials as the light-emitting layer exhibit high efficiencies. The monochromatic large-area of 40 x 83 mm2 Yellow and Green OLEDs have also been demonstrated.
The solution/evaporation hybrid processed organic light emitting devices composed of newly developed host material
CzDBS, green PG-02 dopant, and orange PO-01-TB and PO-06 dopants are studied. Orange, green and two-peak white
light emitting devices were fabricated by using spin coating of HIL, HTL and emission layers followed by thermal
evaporation of ETL and cathode. The orange devices achieved efficacies of 26.9 cd/A and 14.6 lm/W at the brightness of
1538 nits. The green devices, on the other hand, achieved efficacies of 31.3 cd/A and 19.7 lm/W at the brightness of
1590 nits. The two-peak white devices, composed of blue FIrpic and orange PO-01-TB, achieved efficacies of 36.9 cd/A
and 18.4 lm/W at the brightness of 1150 nits.
A gas barrier film composed of SiO2/Al2O3 multilayers on flexible PEN and PI substrates is studied. The multilayers are
obtained by stacking six SiO2/Al2O3 pairs utilizing the RF sputtering, and each layer is about 60 nm in thickness. The
barrier performances are further identified by the accelerated transparent Ca tests we proposed and the OLED lifetime
tests. The water vapor transmission rates (WVTR) of the gas barrier films are calculated to be 5.05×10-3 at 85°C/85%RH
and 9.5×10-6 at 20°C/60%RH, respectively. The decay rate in the Ca test at 85°C/85%RH is approximately 531 times
faster than that at 20°C/60%RH. The half lifetime of the OLED with the multilayers gas barrier as the substrate lasts as
long as the device using the glass substrate, which shows the feasibility of fabricating a thin film encapsulated OLED.
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