期刊
APPLIED PHYSICS LETTERS
卷 100, 期 7, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3684971
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资金
- NSFC [20602017, 20971067, 21021062, 21072093]
- National Basic Research Program of China [2011CB808704]
- Ministry of Education of China [20090091110017]
The electron mobility of Alq(3) and iridium complexes was determined via transient electroluminescence (EL) method based on ITO (indium tin oxide)/di-[4-(N,N-ditolyl-amino)-phenyl]cyclohexane/complex/LiF/Al with short and rectangular driving voltage pulses. Apparent values of the electron mobility (mu(e)) in complexes have been investigated from their onset of EL upon different driving voltages. The result reveals that the mu(e), 4.31 x 10(-6) cm(2)/V.s, of the efficient phosphorescent material Ir(tfmppy)(2)(tpip) [1, tfmppy - 4-trifluoromethylphenylpyridine, tpip - tetraphenylimido-diphosphinate] under electric field of 1300 (V/cm)(1/2) is as high as that of Alq(3), which indicates that the good device performances of 1 are partly due to its high electron mobility. (C) 2012 American Institute of Physics. [doi:10.1063/1.3684971]
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