The bilayer organic light-emitting diode(OLED) with a blue fluorescent lanthanum complex, tris(1-phenyl-3-methyl-4-isobutyryl-5-pyrazolone)-(2,2′-dipyridyl) lanthanum [La(PMIP) 3(Bipy)], as a light emitting material...The bilayer organic light-emitting diode(OLED) with a blue fluorescent lanthanum complex, tris(1-phenyl-3-methyl-4-isobutyryl-5-pyrazolone)-(2,2′-dipyridyl) lanthanum [La(PMIP) 3(Bipy)], as a light emitting material and N,N′-diphenyl-N,N′-bis(3-methylphenyl)-1,1′-biphenyl-4,4′-diamine(TPD) as a hole transporting material emits bright green light instead of blue light. The data of the absorption, the photoluminescence(PL) and the photoluminescence excitation(PLE) spectra of TPD, La(PMIP) 3(Bipy) and the mixture of TPD and La(PMIP) 3(Bipy)(molar ratio 1∶1) prove that the electroluminescent emission originates from the exciplex on the interface between TPD and La(PMIP) 3(Bipy). By improving device configuration with tris(8-hydroxyquinoline) aluminum(ALQ) as an electron transporting material, a maximum luminance of 800 cd/m 2 was obtained.展开更多
The single-wall carbon nanotubes (SWCNs) were discovered in '93 and are made of pure carbon atoms just like a single sheet of graphite wrapped around acylindrical axis. The same material with slight varia-tions in...The single-wall carbon nanotubes (SWCNs) were discovered in '93 and are made of pure carbon atoms just like a single sheet of graphite wrapped around acylindrical axis. The same material with slight varia-tions in the geometrical arrangement yields different electronic properties, which could range from metallic to semiconducting behavior. They have fascinatingchemical,展开更多
基金the National Natural Science Foundation of China(Nos.2 0 2 2 110 1,2 0 4 710 0 4 ,5 0 372 0 0 2 ) ,State"86 3"Program(No.2 0 2 2 AA32 4 0 80 ) and the Doctorial Program Foundation of High Education(No.2 0 0 30 0 0 10 6 5 )
文摘The bilayer organic light-emitting diode(OLED) with a blue fluorescent lanthanum complex, tris(1-phenyl-3-methyl-4-isobutyryl-5-pyrazolone)-(2,2′-dipyridyl) lanthanum [La(PMIP) 3(Bipy)], as a light emitting material and N,N′-diphenyl-N,N′-bis(3-methylphenyl)-1,1′-biphenyl-4,4′-diamine(TPD) as a hole transporting material emits bright green light instead of blue light. The data of the absorption, the photoluminescence(PL) and the photoluminescence excitation(PLE) spectra of TPD, La(PMIP) 3(Bipy) and the mixture of TPD and La(PMIP) 3(Bipy)(molar ratio 1∶1) prove that the electroluminescent emission originates from the exciplex on the interface between TPD and La(PMIP) 3(Bipy). By improving device configuration with tris(8-hydroxyquinoline) aluminum(ALQ) as an electron transporting material, a maximum luminance of 800 cd/m 2 was obtained.
基金support provided by the Major-Research Plane-Nanoscience and Technology Basic Research(90206032)the Outstanding Youth scholars Fund(10125523)of the National Natural Science Foundation of China.
文摘The single-wall carbon nanotubes (SWCNs) were discovered in '93 and are made of pure carbon atoms just like a single sheet of graphite wrapped around acylindrical axis. The same material with slight varia-tions in the geometrical arrangement yields different electronic properties, which could range from metallic to semiconducting behavior. They have fascinatingchemical,
