Please use this identifier to cite or link to this item: https://doi.org/10.1088/0022-3727/39/23/013
Title: High-efficiency blue-emitting organic light-emitting devices with 4, 4′, 4″-tris(N-carbazolyl)-triphenylamine as the hole/exciton- blocking layer
Authors: Xia, Y.-J.
Lin, J.
Tang, C.
Yin, K.
Zhong, G.-Y.
Ni, G.
Peng, B.
Gan, F.-X.
Huang, W. 
Issue Date: 17-Dec-2006
Source: 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
URI: http://scholarbank.nus.edu.sg/handle/10635/92028
ISSN: 00223727
DOI: 10.1088/0022-3727/39/23/013
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