White organic light-emitting devices(WOLEDs) were fabricated by using a highly blue fluorescent dye of 4,4'-bis(2,2'-diphenyl vinyl)-1,1'-biphenyl(DPVBi) and a red fluorescent dye of 5H-benzo[ij] quinolizi...White organic light-emitting devices(WOLEDs) were fabricated by using a highly blue fluorescent dye of 4,4'-bis(2,2'-diphenyl vinyl)-1,1'-biphenyl(DPVBi) and a red fluorescent dye of 5H-benzo[ij] quinolizin-9-yl) ethenyl]-4H-pyran-4-ylidene] propane-dinitrile(DCM2), together with a green fluorescent dye of 10-(2-benzothiazolyl)-2,3,6,7-tetrahydro-1,1,7,7-tetramethyl-1 H,5 H,11 H-(1)-benzopyroyran-o(6,7-8-i,j) quinolizin-11-one(C545 T).The multilayer WOLEDs does not involve the doping process.The structure of the device is indium tin oxide(ITO)/4,4',4''-tris{N,-(3-methylphenyl)-N-phenylamin}triphenylamine(m-MTDATA)(55 nm)/N,N'-bis-(1-naphthyl)-N,N'-diphenyl-1,1'-biph-enyl-4,4'-diamine(NPB)(10 nm)/DPVBi(8 nm)/C545 T(x nm)/DPVBi(5 nm)/DCM2(y nm)/tris-(8-hydroxyquinoline) aluminum(Alq3)(60 nm)/LiF(1 nm)/Al, where the DPVBi is introduced as a spacer.By changing the thicknesses of dual ultrathin layers of C545 T and DCM2, the WOLED is obtained.When x=y=0.05, the Commission Internationale de 1'Eclairage(CIE) coordinates of the device change from(0.262 6, 0.351 4) at 4 V to(0.214 7, 0.269 3) at 12 V that are well in the white region.Its maximum luminance is 41400 cd/m^2 at 13 V, and the maximum current efficiency and the maximum power efficiency are 7.95 cd/A at 6 V and 5.37 lm/W at 5 V, respectively.展开更多
基金supported by the Major Project of Science and Technology Office of Fujian Province of China(No.2014H0042)the Natural Science Foundation of Fujian Province of China(No.2015J01664)
文摘White organic light-emitting devices(WOLEDs) were fabricated by using a highly blue fluorescent dye of 4,4'-bis(2,2'-diphenyl vinyl)-1,1'-biphenyl(DPVBi) and a red fluorescent dye of 5H-benzo[ij] quinolizin-9-yl) ethenyl]-4H-pyran-4-ylidene] propane-dinitrile(DCM2), together with a green fluorescent dye of 10-(2-benzothiazolyl)-2,3,6,7-tetrahydro-1,1,7,7-tetramethyl-1 H,5 H,11 H-(1)-benzopyroyran-o(6,7-8-i,j) quinolizin-11-one(C545 T).The multilayer WOLEDs does not involve the doping process.The structure of the device is indium tin oxide(ITO)/4,4',4''-tris{N,-(3-methylphenyl)-N-phenylamin}triphenylamine(m-MTDATA)(55 nm)/N,N'-bis-(1-naphthyl)-N,N'-diphenyl-1,1'-biph-enyl-4,4'-diamine(NPB)(10 nm)/DPVBi(8 nm)/C545 T(x nm)/DPVBi(5 nm)/DCM2(y nm)/tris-(8-hydroxyquinoline) aluminum(Alq3)(60 nm)/LiF(1 nm)/Al, where the DPVBi is introduced as a spacer.By changing the thicknesses of dual ultrathin layers of C545 T and DCM2, the WOLED is obtained.When x=y=0.05, the Commission Internationale de 1'Eclairage(CIE) coordinates of the device change from(0.262 6, 0.351 4) at 4 V to(0.214 7, 0.269 3) at 12 V that are well in the white region.Its maximum luminance is 41400 cd/m^2 at 13 V, and the maximum current efficiency and the maximum power efficiency are 7.95 cd/A at 6 V and 5.37 lm/W at 5 V, respectively.
