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|Title:||High-efficiency blue-emitting organic light-emitting devices with 4, 4′, 4″-tris(N-carbazolyl)-triphenylamine as the hole/exciton- blocking layer|
|Citation:||Xia, Y.-J., Lin, J., Tang, C., Yin, K., Zhong, G.-Y., Ni, G., Peng, B., Gan, F.-X., Huang, W. (2006-12-17). High-efficiency blue-emitting organic light-emitting devices with 4, 4′, 4″-tris(N-carbazolyl)-triphenylamine as the hole/exciton- blocking layer. Journal of Physics D: Applied Physics 39 (23) : 4987-4991. ScholarBank@NUS Repository. https://doi.org/10.1088/0022-3727/39/23/013|
|Abstract:||Organic light-emitting devices with the structure of indium-tin-oxide (ITO)/4, 4′, 4″-tris(N-carbazolyl)-triphenylamine (TCTA, with different thicknesses)/2-pyrenyl-9-phenyl-9-pyrenylfluorene (2P9PPF) (30 nm)/bathocuproine (BCP) (40 nm)/Mg : Ag (250 nm) have been investigated. The effect of the TCTA layer on the performance of blue-emitting devices has been studied. It is demonstrated that the inserted 8 nm thick TCTA layer neighbouring the anode of the device leads to the efficiency and luminance increasing ten times, reaching 3.8 cd A-1 at 9 V and 17 000 cd m-2 at 15 V, respectively. It is suggested that the inserted TCTA layer acts as an effective exciton-blocking layer, and also plays the role of the anode buffer layer. © 2006 IOP Publishing Ltd.|
|Source Title:||Journal of Physics D: Applied Physics|
|Appears in Collections:||Staff Publications|
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