Influence of potential barrier materials on device performance

Z. Y. Xie; Y. Q. Li; T. C. Wong; F. L. Wong; M. K. Fung; S. T. Lee; L. S. Hung

doi:10.1557/proc-725-p11.1

Influence of potential barrier materials on device performance

Z. Y. Xie^*
, Y. Q. Li
, T. C. Wong
, F. L. Wong
, M. K. Fung
, S. T. Lee
, L. S. Hung

^*Corresponding author for this work

City University of Hong Kong

Research output: Contribution to journal › Conference article › peer-review

Abstract

An organic light-emitting device (OLED) having a double-heterostructure of ITO/NPB/DCM-doped Alq₃/BCP/Alq₃/MgAg was constructed to form a narrow recombination zone where both charge carriers and excitons are confined, thus resulting in efficient electron-hole recombination and energy transfer. It was found that though luminance efficiency was enhanced, the low electron mobility of BCP resulted in higher driving voltages and limited the improvement of power efficiency. Significant improvements on both quantum efficiency and power efficiency were achieved by replace 1,3,5-tri(phenyl-2-benzimidazoly)-benzene (TPBI) for BCP, and were correlated with its high electron mobility. Device performance was further improved in the structure ITO/NPB/DCM-doped Alq₃/TPBI/LiF/MgAg with a maximum luminance efficiency 6.03 cd/A and a power efficiency of 5.94 lm/W.

Original language	English
Pages (from-to)	37-41
Number of pages	5
Journal	Materials Research Society Symposium - Proceedings
Volume	725
DOIs	https://doi.org/10.1557/proc-725-p11.1
State	Published - 2002
Externally published	Yes
Event	Organic and Polymeric materials and Devices - Optical, Electrical and Optoelectronic Properties - San Francisco, CA, United States Duration: 1 Apr 2002 → 5 Apr 2002

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title = "Influence of potential barrier materials on device performance",

abstract = "An organic light-emitting device (OLED) having a double-heterostructure of ITO/NPB/DCM-doped Alq3/BCP/Alq3/MgAg was constructed to form a narrow recombination zone where both charge carriers and excitons are confined, thus resulting in efficient electron-hole recombination and energy transfer. It was found that though luminance efficiency was enhanced, the low electron mobility of BCP resulted in higher driving voltages and limited the improvement of power efficiency. Significant improvements on both quantum efficiency and power efficiency were achieved by replace 1,3,5-tri(phenyl-2-benzimidazoly)-benzene (TPBI) for BCP, and were correlated with its high electron mobility. Device performance was further improved in the structure ITO/NPB/DCM-doped Alq3/TPBI/LiF/MgAg with a maximum luminance efficiency 6.03 cd/A and a power efficiency of 5.94 lm/W.",

author = "Xie, \{Z. Y.\} and Li, \{Y. Q.\} and Wong, \{T. C.\} and Wong, \{F. L.\} and Fung, \{M. K.\} and Lee, \{S. T.\} and Hung, \{L. S.\}",

year = "2002",

doi = "10.1557/proc-725-p11.1",

language = "英语",

volume = "725",

pages = "37--41",

journal = "Materials Research Society Symposium - Proceedings",

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publisher = "Materials Research Society",

note = "Organic and Polymeric materials and Devices - Optical, Electrical and Optoelectronic Properties ; Conference date: 01-04-2002 Through 05-04-2002",

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TY - JOUR

T1 - Influence of potential barrier materials on device performance

AU - Xie, Z. Y.

AU - Li, Y. Q.

AU - Wong, T. C.

AU - Wong, F. L.

AU - Fung, M. K.

AU - Lee, S. T.

AU - Hung, L. S.

PY - 2002

Y1 - 2002

N2 - An organic light-emitting device (OLED) having a double-heterostructure of ITO/NPB/DCM-doped Alq3/BCP/Alq3/MgAg was constructed to form a narrow recombination zone where both charge carriers and excitons are confined, thus resulting in efficient electron-hole recombination and energy transfer. It was found that though luminance efficiency was enhanced, the low electron mobility of BCP resulted in higher driving voltages and limited the improvement of power efficiency. Significant improvements on both quantum efficiency and power efficiency were achieved by replace 1,3,5-tri(phenyl-2-benzimidazoly)-benzene (TPBI) for BCP, and were correlated with its high electron mobility. Device performance was further improved in the structure ITO/NPB/DCM-doped Alq3/TPBI/LiF/MgAg with a maximum luminance efficiency 6.03 cd/A and a power efficiency of 5.94 lm/W.

AB - An organic light-emitting device (OLED) having a double-heterostructure of ITO/NPB/DCM-doped Alq3/BCP/Alq3/MgAg was constructed to form a narrow recombination zone where both charge carriers and excitons are confined, thus resulting in efficient electron-hole recombination and energy transfer. It was found that though luminance efficiency was enhanced, the low electron mobility of BCP resulted in higher driving voltages and limited the improvement of power efficiency. Significant improvements on both quantum efficiency and power efficiency were achieved by replace 1,3,5-tri(phenyl-2-benzimidazoly)-benzene (TPBI) for BCP, and were correlated with its high electron mobility. Device performance was further improved in the structure ITO/NPB/DCM-doped Alq3/TPBI/LiF/MgAg with a maximum luminance efficiency 6.03 cd/A and a power efficiency of 5.94 lm/W.

UR - https://www.scopus.com/pages/publications/0036459219

U2 - 10.1557/proc-725-p11.1

DO - 10.1557/proc-725-p11.1

M3 - 会议文章

AN - SCOPUS:0036459219

SN - 0272-9172

VL - 725

SP - 37

EP - 41

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

T2 - Organic and Polymeric materials and Devices - Optical, Electrical and Optoelectronic Properties

Y2 - 1 April 2002 through 5 April 2002

ER -

Influence of potential barrier materials on device performance

Abstract

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