Transient and steady-state space-charge-limited currents in polyfluorene copolymer diode structures with ohmic hole injecting contacts

Alasdair J. Campbell; Donal D.C. Bradley; Homer Antoniadis; Mike Inbasekaran; Weishi W. Wu; Ed P. Woo

doi:10.1063/1.126182

Transient and steady-state space-charge-limited currents in polyfluorene copolymer diode structures with ohmic hole injecting contacts

Alasdair J. Campbell, Donal D.C. Bradley, Homer Antoniadis, Mike Inbasekaran, Weishi W. Wu, Ed P. Woo

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

102 Scopus citations

Abstract

We report detailed measurements on diode structures containing the electroluminescent polyfluorene copolymer poly(9,9-dioctylfluorene-co-bis-N,N′-(4-methoxyphenyl)-bis-N, N′-phenyl-1,4 phenylenediamine). Ohmic injection of holes is achieved with an oxygen plasma cleaned indium tin oxide (ITO) electrode, untreated ITO coated with a film of poly(ethylenedioxythiophene)/polystyrenesulphonic acid (PEDOT/PSS) and plasma cleaned ITO with PEDOT/PSS. Transient dark injection and time-of-flight mobility measurements and steady state current density versus voltage measurements are then entirely consistent with a positive carrier, trap-free, space-charge-limited current. Injection limited behavior is observed, however, for untreated ITO without PEDOT/PSS and for evaporated Au contacts. © 2000 American Institute of Physics.

Original language	English (US)
Journal	Applied Physics Letters
Volume	76
Issue number	13
DOIs	https://doi.org/10.1063/1.126182
State	Published - Mar 27 2000
Externally published	Yes

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@article{84dc04d1ec68445b9cab3b33d4cc0aac,

title = "Transient and steady-state space-charge-limited currents in polyfluorene copolymer diode structures with ohmic hole injecting contacts",

abstract = "We report detailed measurements on diode structures containing the electroluminescent polyfluorene copolymer poly(9,9-dioctylfluorene-co-bis-N,N′-(4-methoxyphenyl)-bis-N, N′-phenyl-1,4 phenylenediamine). Ohmic injection of holes is achieved with an oxygen plasma cleaned indium tin oxide (ITO) electrode, untreated ITO coated with a film of poly(ethylenedioxythiophene)/polystyrenesulphonic acid (PEDOT/PSS) and plasma cleaned ITO with PEDOT/PSS. Transient dark injection and time-of-flight mobility measurements and steady state current density versus voltage measurements are then entirely consistent with a positive carrier, trap-free, space-charge-limited current. Injection limited behavior is observed, however, for untreated ITO without PEDOT/PSS and for evaporated Au contacts. {\textcopyright} 2000 American Institute of Physics.",

author = "Campbell, {Alasdair J.} and Bradley, {Donal D.C.} and Homer Antoniadis and Mike Inbasekaran and Wu, {Weishi W.} and Woo, {Ed P.}",

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T1 - Transient and steady-state space-charge-limited currents in polyfluorene copolymer diode structures with ohmic hole injecting contacts

AU - Campbell, Alasdair J.

AU - Bradley, Donal D.C.

AU - Antoniadis, Homer

AU - Inbasekaran, Mike

AU - Wu, Weishi W.

AU - Woo, Ed P.

N1 - Generated from Scopus record by KAUST IRTS on 2019-11-27

PY - 2000/3/27

Y1 - 2000/3/27

N2 - We report detailed measurements on diode structures containing the electroluminescent polyfluorene copolymer poly(9,9-dioctylfluorene-co-bis-N,N′-(4-methoxyphenyl)-bis-N, N′-phenyl-1,4 phenylenediamine). Ohmic injection of holes is achieved with an oxygen plasma cleaned indium tin oxide (ITO) electrode, untreated ITO coated with a film of poly(ethylenedioxythiophene)/polystyrenesulphonic acid (PEDOT/PSS) and plasma cleaned ITO with PEDOT/PSS. Transient dark injection and time-of-flight mobility measurements and steady state current density versus voltage measurements are then entirely consistent with a positive carrier, trap-free, space-charge-limited current. Injection limited behavior is observed, however, for untreated ITO without PEDOT/PSS and for evaporated Au contacts. © 2000 American Institute of Physics.

AB - We report detailed measurements on diode structures containing the electroluminescent polyfluorene copolymer poly(9,9-dioctylfluorene-co-bis-N,N′-(4-methoxyphenyl)-bis-N, N′-phenyl-1,4 phenylenediamine). Ohmic injection of holes is achieved with an oxygen plasma cleaned indium tin oxide (ITO) electrode, untreated ITO coated with a film of poly(ethylenedioxythiophene)/polystyrenesulphonic acid (PEDOT/PSS) and plasma cleaned ITO with PEDOT/PSS. Transient dark injection and time-of-flight mobility measurements and steady state current density versus voltage measurements are then entirely consistent with a positive carrier, trap-free, space-charge-limited current. Injection limited behavior is observed, however, for untreated ITO without PEDOT/PSS and for evaporated Au contacts. © 2000 American Institute of Physics.

UR - http://aip.scitation.org/doi/10.1063/1.126182

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U2 - 10.1063/1.126182

DO - 10.1063/1.126182

M3 - Article

SN - 0003-6951

VL - 76

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 13

ER -

Transient and steady-state space-charge-limited currents in polyfluorene copolymer diode structures with ohmic hole injecting contacts

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