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We reported a blue phosphorescent organic light-emitting diode (OLED) with the highest current efficiency of 55.2 cd/A, power efficiency of 50.5 lm/W and external quantum efficiency (EQE) of 24.8%, by using a tetraphenylsilane host in the emitting layer doped with blue emitter, bis[2-(4,6-difluorophenyl)pyridinato-C2,N](picolinato)iridium(in) (FIrpic).
We demonstrated a blue phosphorescent organic light-emitting diode with the maximum current efficiency and power efficiency of 57.4 cd/A and 51.6 lm/W, respectively, based on trizaole derivatives as the host of the emitting layer.
We demonstrated device performances of exciplex organic light emitting diodes (OLEDs) by using 4, 4′, 4”-tris(N-3-methyphenyl-N-phenyl-amino) triphenylamine (m-MTDATA) and 4,7-diphenyl-1,10-phenanthroline (Bphen) as electron donor and acceptor materials, respectively with different emitting layer (EML) thicknesses. The maximum current efficiency and external quantum efficiency (EQE) of the optimized...
In this report, the influences of the impurities to the performance of OLEDs were discussed. The removing of the impurities improve the carrier injection ability and also carrier transporting behavior, resulted in the improvements of device efficiency. The transient electroluminescence (TREL) analysis was also used to discuss the carrier transporting behavior of OLEDs with various material purification...
We have demonstrated a small molecule organic solar cell with a novel electron donor material based on donor-acceptor-acceptor (D-A-A) backbone. In such a device, 2.32%, 0.92 V, and 4.80 mA/cm2 in power conversion efficiency, open circuit voltage, and short circuit current density, respectively, was achieved with planar mix bulk heterojunction structure combined with C60 as the electron acceptor.
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