Novel molecular material, 1-benzotlliazoly-3 -phenyl --pyrazoline (BTPP) was found to function as bright blue light emitting dye in organic electroluminescent device, and its optical and electric characteristics were ...Novel molecular material, 1-benzotlliazoly-3 -phenyl --pyrazoline (BTPP) was found to function as bright blue light emitting dye in organic electroluminescent device, and its optical and electric characteristics were investigated. This heterocyclic compound exhibited good characteristics of blue photoluminescence and electroluminescence, which had the emission peak at 450 nm. The single layer light-emitting devices using BTPP as light-emitting material dispersed in poly(N- vinylcarbazole) (PVK) and double layer ones using PBD as hole block layer above the light-emitting layer were fabricated using conventional spin-casting and vaccum vapour deposition methods. The introduction of PBD has enhanced electron injection and luminance efficiency, compared with the single layer LEDs.展开更多
A blue dye, 1-benzqthiazoly-3-phenyl-pyrazoline (BTPP) was found to function as bright light emitting dye in organic electroluminescent devices. This heterocyclic compound exhibits good characteristics of blue photolu...A blue dye, 1-benzqthiazoly-3-phenyl-pyrazoline (BTPP) was found to function as bright light emitting dye in organic electroluminescent devices. This heterocyclic compound exhibits good characteristics of blue photoluminescence and electroluminescence, which has emission peak at 445 nm. The thin films of fluorescent dye dispersed in poly(N-vinylcarbazole) (PVK) could serve as light-emitting layers in multilayer organic LEDs. 2-(4-Biphenyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (PBD) and tris-(8-hydroxyquinoline) aluminum (Alq3) were introduced into double-layer and three-layer devices respectively. The introduction of electron transport material Alq3 enhanced the electron injection and luminous efficiency, as compared with double-layer devices. Maximum brightness and luminous efficiency can be reached up to 190 cd/m(2) and 0.31 m/W, respectively.展开更多
基金supported by the National "863" project !863 -307-05-05(02) National Natural Science foundation!69637010
文摘Novel molecular material, 1-benzotlliazoly-3 -phenyl --pyrazoline (BTPP) was found to function as bright blue light emitting dye in organic electroluminescent device, and its optical and electric characteristics were investigated. This heterocyclic compound exhibited good characteristics of blue photoluminescence and electroluminescence, which had the emission peak at 450 nm. The single layer light-emitting devices using BTPP as light-emitting material dispersed in poly(N- vinylcarbazole) (PVK) and double layer ones using PBD as hole block layer above the light-emitting layer were fabricated using conventional spin-casting and vaccum vapour deposition methods. The introduction of PBD has enhanced electron injection and luminance efficiency, compared with the single layer LEDs.
基金This work was supported by National Natural Science Foundation of China(No.69637010).
文摘A blue dye, 1-benzqthiazoly-3-phenyl-pyrazoline (BTPP) was found to function as bright light emitting dye in organic electroluminescent devices. This heterocyclic compound exhibits good characteristics of blue photoluminescence and electroluminescence, which has emission peak at 445 nm. The thin films of fluorescent dye dispersed in poly(N-vinylcarbazole) (PVK) could serve as light-emitting layers in multilayer organic LEDs. 2-(4-Biphenyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (PBD) and tris-(8-hydroxyquinoline) aluminum (Alq3) were introduced into double-layer and three-layer devices respectively. The introduction of electron transport material Alq3 enhanced the electron injection and luminous efficiency, as compared with double-layer devices. Maximum brightness and luminous efficiency can be reached up to 190 cd/m(2) and 0.31 m/W, respectively.
