High-efficiency light-emitting diodes using neutral surfactants and aluminum cathode

Yu-Hua Niu; Hong Ma; Qingmin Xu; Alex K.-Y. Jen

doi:10.1063/1.1865327

High-efficiency light-emitting diodes using neutral surfactants and aluminum cathode

Yu-Hua Niu, Hong Ma, Qingmin Xu, Alex K.-Y. Jen^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

87 Citations (Scopus)

Abstract

High-efficiency polymer light-emitting diodes were fabricated by spin-coating a layer of neutral surfactant on top of the poly[2-methoxy-5- (2′ -ethylhexyloxy)-1,4-phenylenevinylene] electroluminescent (EL) layer to facilitate the electron injection through the high-work-function aluminum cathode. The external luminous efficiency of the device can reach 3.59 cd/A, which is higher than the control device (1.89 cd/A) using calcium as cathode. It was found that when the combination of surfactant and aluminum was used as cathode the abundant hole-injection through a hole-transporting layer and hole pile-up at the inner side of the EL/surfactant interface causes an effective electric field to enhance electron injection. © 2005 American Institute of Physics.

Original language	English
Article number	83504
Pages (from-to)	1-3
Journal	Applied Physics Letters
Volume	86
Issue number	8
DOIs	https://doi.org/10.1063/1.1865327
Publication status	Published - 21 Feb 2005
Externally published	Yes

Access Output

10.1063/1.1865327

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

@article{67ff2d91971e49e39ea07fe7e1534206,

title = "High-efficiency light-emitting diodes using neutral surfactants and aluminum cathode",

abstract = "High-efficiency polymer light-emitting diodes were fabricated by spin-coating a layer of neutral surfactant on top of the poly[2-methoxy-5- (2′ -ethylhexyloxy)-1,4-phenylenevinylene] electroluminescent (EL) layer to facilitate the electron injection through the high-work-function aluminum cathode. The external luminous efficiency of the device can reach 3.59 cd/A, which is higher than the control device (1.89 cd/A) using calcium as cathode. It was found that when the combination of surfactant and aluminum was used as cathode the abundant hole-injection through a hole-transporting layer and hole pile-up at the inner side of the EL/surfactant interface causes an effective electric field to enhance electron injection. {\textcopyright} 2005 American Institute of Physics.",

author = "Yu-Hua Niu and Hong Ma and Qingmin Xu and Jen, {Alex K.-Y.}",

year = "2005",

month = feb,

day = "21",

doi = "10.1063/1.1865327",

language = "English",

volume = "86",

pages = "1--3",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "8",

}

TY - JOUR

T1 - High-efficiency light-emitting diodes using neutral surfactants and aluminum cathode

AU - Niu, Yu-Hua

AU - Ma, Hong

AU - Xu, Qingmin

AU - Jen, Alex K.-Y.

PY - 2005/2/21

Y1 - 2005/2/21

N2 - High-efficiency polymer light-emitting diodes were fabricated by spin-coating a layer of neutral surfactant on top of the poly[2-methoxy-5- (2′ -ethylhexyloxy)-1,4-phenylenevinylene] electroluminescent (EL) layer to facilitate the electron injection through the high-work-function aluminum cathode. The external luminous efficiency of the device can reach 3.59 cd/A, which is higher than the control device (1.89 cd/A) using calcium as cathode. It was found that when the combination of surfactant and aluminum was used as cathode the abundant hole-injection through a hole-transporting layer and hole pile-up at the inner side of the EL/surfactant interface causes an effective electric field to enhance electron injection. © 2005 American Institute of Physics.

AB - High-efficiency polymer light-emitting diodes were fabricated by spin-coating a layer of neutral surfactant on top of the poly[2-methoxy-5- (2′ -ethylhexyloxy)-1,4-phenylenevinylene] electroluminescent (EL) layer to facilitate the electron injection through the high-work-function aluminum cathode. The external luminous efficiency of the device can reach 3.59 cd/A, which is higher than the control device (1.89 cd/A) using calcium as cathode. It was found that when the combination of surfactant and aluminum was used as cathode the abundant hole-injection through a hole-transporting layer and hole pile-up at the inner side of the EL/surfactant interface causes an effective electric field to enhance electron injection. © 2005 American Institute of Physics.

UR - http://www.scopus.com/inward/record.url?scp=17044409183&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-17044409183&origin=recordpage

U2 - 10.1063/1.1865327

DO - 10.1063/1.1865327

M3 - RGC 21 - Publication in refereed journal

SN - 0003-6951

VL - 86

SP - 1

EP - 3

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 8

M1 - 83504

ER -

High-efficiency light-emitting diodes using neutral surfactants and aluminum cathode

Abstract

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Cite this