Browsing by Author "Xia, Ping Fang"

Now showing 1 - 3 of 3

New Host Containing Bipolar Carrier Transport Moiety for High-Efficiency Electrophosphorescence at Low Voltages
(2009-02-09)
Gao, Zhi Qiang
;
Luo, Meiming
;
Sun, Xiao Hua
;
Tam, Hoi Lam
;
Wong, Man Shing
A new host material for use in phosphorescent OLEDs with desirable electronic properties has been synthesized. The material exhibits superior carrier-transport properties, a narrow optical band gap, relatively high triplet energy, and high thermal stability. It is synthesized by integrating hole-transporting carbazole groups into an electron-transporting phenanthroline core (see figure), and is demonstrated to be an excellent host for phosphorescent dopant emitters.
Strong Luminescent Iridium Complexes with (CN)-N-boolean AND=N Structure in Ligands and Their Potential in Efficient and Thermally Stable Phosphorescent OLEDs
(2009-01-19)
Mi, Boo Xiu
;
Wang, Peng Fei
;
Gao, Zhi Qiang
;
Lee, Chun Sing
;
Lee, Shuit Tong
Homoleptic iridium complexes with (CN)-N-boolean AND=N type ligands, i.e., 1,4-bis (phenyl) phthalazine (BPPa) and 3,6-bis(phenyl)pyridazine (BPPya), are strong phosphorescents, easy to synthesize, and thermally stable, thus having great potential in optical electronic applications, as demonstrated in lr(BPPa)(3)-based OLED devices. A quantum chemistry study shows that (CN)-N-boolean AND=N type ligands can bond to Ir more strongly.
Strong Luminescent Iridium Complexes with C(boolean AND)N=N Structure in Ligands and Their Potential in Efficient and Thermally Stable Phosphorescent OLEDs
(2009-01-19)
Mi, Boo Xiu
;
Wang, Peng Fei
;
Gao, Zhi Qiang
;
Lee, Chun Sing
;
Lee, Shuit Tong
Homoleptic iridium complexes with C(boolean AND)N=N type ligands, i.e., 1,4-bis (phenyl) phthalazine (BPPa) and 3,6-bis(phenyl)pyridazine (BPPya), are strong phosphorescents, easy to synthesize, and thermally stable, thus having great potential in optical electronic applications, as demonstrated in lr(BPPa)(3)-based OLED devices. A quantum chemistry study shows that C(boolean AND)N=N type ligands can bond to Ir more strongly.