Hole transport in molecularly doped naphthyl diamine

K. L. Tong; S. W. Tsang; K. K. Tsung; S. C. Tse; Shu Kong SO

doi:10.1063/1.2804109

Hole transport in molecularly doped naphthyl diamine

K. L. Tong, S. W. Tsang, K. K. Tsung, S. C. Tse, Shu Kong SO^*

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

The effects of dopants on the hole-transporting properties of NPB, i.e., (N,N′ -diphenyl- N, N′ -bis(1-naphthyl) (1, 1′ -biphenyl)- 4, 4′ diamine), were studied by time-of-flight technique and admittance spectroscopy. Three dopants were chosen in this study. They were 4-dicyanmethylene-2-methyl-6-4H-pyran (DCM1), rubrene (RB), and tris-(8-hydroxyquinoline) aluminum (Al q3). It can be shown that DCM1 behaves as hole traps whereas Al q3 behaves as hole scatterers in NPB. Generally, both trapping and scattering lower hole mobilities in NPB. The hole mobilities decrease when DCM1 and Al q3 are introduced into NPB whereas the hole mobility remains nearly unchanged when RB is doped into NPB. The effect of doping on carrier dispersion is also studied.

Original language	English
Article number	093705
Journal	Journal of Applied Physics
Volume	102
Issue number	9
DOIs	https://doi.org/10.1063/1.2804109
Publication status	Published - 2007

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Physics and Astronomy(all)

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@article{a08d4418f266440d8dee4e82707afb0d,

title = "Hole transport in molecularly doped naphthyl diamine",

abstract = "The effects of dopants on the hole-transporting properties of NPB, i.e., (N,N′ -diphenyl- N, N′ -bis(1-naphthyl) (1, 1′ -biphenyl)- 4, 4′ diamine), were studied by time-of-flight technique and admittance spectroscopy. Three dopants were chosen in this study. They were 4-dicyanmethylene-2-methyl-6-4H-pyran (DCM1), rubrene (RB), and tris-(8-hydroxyquinoline) aluminum (Al q3). It can be shown that DCM1 behaves as hole traps whereas Al q3 behaves as hole scatterers in NPB. Generally, both trapping and scattering lower hole mobilities in NPB. The hole mobilities decrease when DCM1 and Al q3 are introduced into NPB whereas the hole mobility remains nearly unchanged when RB is doped into NPB. The effect of doping on carrier dispersion is also studied.",

author = "Tong, {K. L.} and Tsang, {S. W.} and Tsung, {K. K.} and Tse, {S. C.} and SO, {Shu Kong}",

note = "Funding Information: Support of this research by the Research Grant Council of Hong Kong under Grant HKBU211205E and the Research Committee of Hong Kong Baptist University under Grant FRG/06-07/II-73 is gratefully acknowledged.",

year = "2007",

doi = "10.1063/1.2804109",

language = "English",

volume = "102",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics",

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T1 - Hole transport in molecularly doped naphthyl diamine

AU - Tong, K. L.

AU - Tsang, S. W.

AU - Tsung, K. K.

AU - Tse, S. C.

AU - SO, Shu Kong

N1 - Funding Information: Support of this research by the Research Grant Council of Hong Kong under Grant HKBU211205E and the Research Committee of Hong Kong Baptist University under Grant FRG/06-07/II-73 is gratefully acknowledged.

PY - 2007

Y1 - 2007

N2 - The effects of dopants on the hole-transporting properties of NPB, i.e., (N,N′ -diphenyl- N, N′ -bis(1-naphthyl) (1, 1′ -biphenyl)- 4, 4′ diamine), were studied by time-of-flight technique and admittance spectroscopy. Three dopants were chosen in this study. They were 4-dicyanmethylene-2-methyl-6-4H-pyran (DCM1), rubrene (RB), and tris-(8-hydroxyquinoline) aluminum (Al q3). It can be shown that DCM1 behaves as hole traps whereas Al q3 behaves as hole scatterers in NPB. Generally, both trapping and scattering lower hole mobilities in NPB. The hole mobilities decrease when DCM1 and Al q3 are introduced into NPB whereas the hole mobility remains nearly unchanged when RB is doped into NPB. The effect of doping on carrier dispersion is also studied.

AB - The effects of dopants on the hole-transporting properties of NPB, i.e., (N,N′ -diphenyl- N, N′ -bis(1-naphthyl) (1, 1′ -biphenyl)- 4, 4′ diamine), were studied by time-of-flight technique and admittance spectroscopy. Three dopants were chosen in this study. They were 4-dicyanmethylene-2-methyl-6-4H-pyran (DCM1), rubrene (RB), and tris-(8-hydroxyquinoline) aluminum (Al q3). It can be shown that DCM1 behaves as hole traps whereas Al q3 behaves as hole scatterers in NPB. Generally, both trapping and scattering lower hole mobilities in NPB. The hole mobilities decrease when DCM1 and Al q3 are introduced into NPB whereas the hole mobility remains nearly unchanged when RB is doped into NPB. The effect of doping on carrier dispersion is also studied.

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U2 - 10.1063/1.2804109

DO - 10.1063/1.2804109

M3 - Article

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SN - 0021-8979

VL - 102

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 9

M1 - 093705

ER -

Hole transport in molecularly doped naphthyl diamine

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