ICCAS OpenIR
Effect of dye concentration on the charge carrier transport in molecularly doped organic light-emitting diodes
Chen, JS; Ma, DG
2004-05-15
Source PublicationJOURNAL OF APPLIED PHYSICS
ISSN0021-8979
Volume95Issue:10Pages:5778-5781
AbstractThe effect of the concentration of 4-(dicyanomethylene)-2-t-butyl-6-(1,1,7, 7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB) as dopant in tris(8-quinolinolato) aluminum (Alq(3)) on the charge carrier transport in Alq(3):DCJTB was investigated by measuring the steady current-voltage characteristics and the transient electroluminescence. The dopant concentration dependence of the current-voltage relationship clearly indicates the carrier trapping by the DCJTB molecule. The DCJTB concentration significantly affects the electron mobility in Alq(3):DCJTB. The mobility has a nontrivial dependence on the doping level. For relatively low doping levels, less than 1%, the electron mobility of Alq(3):DCJTB decreases with the doping level. An increasing mobility is then observed if the dopant concentration is further increased, followed by a decrease for doping levels larger than similar to2%. The change of the electron mobility with the DCJTB concentration in Alq(3) is attributed to the additional energetic disorder due to potential fluctuations caused by the dipole-dipole interaction of random distribution dopant at the relatively low doping concentration, and to the phase separation at the high doping concentration. (C) 2004 American Institute of Physics.
DOI10.1063/1.1703834
Indexed BySCI
Language英语
WOS IDWOS:000221269300077
PublisherAMER INST PHYSICS
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Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/82174
Collection中国科学院化学研究所
Corresponding AuthorChen, JS
AffiliationChinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Chen, JS,Ma, DG. Effect of dye concentration on the charge carrier transport in molecularly doped organic light-emitting diodes[J]. JOURNAL OF APPLIED PHYSICS,2004,95(10):5778-5781.
APA Chen, JS,&Ma, DG.(2004).Effect of dye concentration on the charge carrier transport in molecularly doped organic light-emitting diodes.JOURNAL OF APPLIED PHYSICS,95(10),5778-5781.
MLA Chen, JS,et al."Effect of dye concentration on the charge carrier transport in molecularly doped organic light-emitting diodes".JOURNAL OF APPLIED PHYSICS 95.10(2004):5778-5781.
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