Electron transport in naphthylamine-based organic compounds

Two naphthylamine-based hole transporters, namely, N , N ′ -diphenyl- N , N ′ -bis(1-naphthyl)( 1 , 1 ′ -biphenyl)- 4 , 4 ′ diamine (NPB) and 4 , 4 ′ , 4 ″ -tris( n -(2-naphthyl)- n -phenyl-amino)-triphenylamine (2TNATA), were found to possess electron transporting (ET) abilities. From time-of-fligh...

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Bibliographic Details
Published in:Applied physics letters 2006-12, Vol.89 (26), p.262102-262102-3
Main Authors: Tse, S. C., Kwok, K. C., So, S. K.
Format: Article
Language:English
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Summary:Two naphthylamine-based hole transporters, namely, N , N ′ -diphenyl- N , N ′ -bis(1-naphthyl)( 1 , 1 ′ -biphenyl)- 4 , 4 ′ diamine (NPB) and 4 , 4 ′ , 4 ″ -tris( n -(2-naphthyl)- n -phenyl-amino)-triphenylamine (2TNATA), were found to possess electron transporting (ET) abilities. From time-of-flight measurements, values of electron mobilities for NPB and 2TNATA are ( 6 - 9 ) × 10 − 4 and ( 1 - 3 ) × 10 − 4 cm 2 ∕ V s , respectively, under an applied electric field range of 0.04 - 0.8 MV ∕ cm at 290 K . An organic light-emitting diode that employed NPB as the ET material was demonstrated. The electron conducting mechanism of NPB and 2TNATA in relation to the Marcus theory [ Rev. Mod. Phys. 65 , 599 ( 1993 ) ] from quantum chemistry will be discussed.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2420785