Applications of Ytterbium in organic light-emitting devices as high performance and transparent electrodes

S. L. Lai; M. Y. Chan; M. K. Fung; C. S. Lee; L. S. Hung; S. T. Lee

doi:10.1016/S0009-2614(02)01553-1

Applications of Ytterbium in organic light-emitting devices as high performance and transparent electrodes

S. L. Lai, M. Y. Chan, M. K. Fung, C. S. Lee, L. S. Hung, S. T. Lee

Centre of Super-Diamond and Advanced Films

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

78 Citations (Scopus)

Abstract

Potential applications of Ytterbium (Yb) in cathode system for organic optoelectronic/electronic devices were explored in NPB/Alq₃ based bi-layer organic light-emitting devices (OLEDs). When a thin (14.5 nm) Yb layer capped with a thicker (200 nm) Ag layer was used as the cathode, the OLEDs show enhanced electron injection over those using the standard Mg:Ag cathode. Performance of the OLEDs with the Yb/Ag cathode is comparable to that using LiF/Al cathode. Interestingly, we also found that Yb can also be used to prepare a highly transparent cathode by coevaporating Yb and Ag to form a Yb:Ag alloy electrode. Surface-emitting (or top emission) and transparent (emission from both surfaces) OLEDs with low turn-on voltage (3.75 V) and high efficiency were prepared with the Yb:Ag electrode. © 2002 Elsevier Science B.V. All rights reserved.

Original language	English
Pages (from-to)	128-133
Journal	Chemical Physics Letters
Volume	366
Issue number	1-2
DOIs	https://doi.org/10.1016/S0009-2614(02)01553-1
Publication status	Published - 25 Nov 2002

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title = "Applications of Ytterbium in organic light-emitting devices as high performance and transparent electrodes",

abstract = "Potential applications of Ytterbium (Yb) in cathode system for organic optoelectronic/electronic devices were explored in NPB/Alq3 based bi-layer organic light-emitting devices (OLEDs). When a thin (14.5 nm) Yb layer capped with a thicker (200 nm) Ag layer was used as the cathode, the OLEDs show enhanced electron injection over those using the standard Mg:Ag cathode. Performance of the OLEDs with the Yb/Ag cathode is comparable to that using LiF/Al cathode. Interestingly, we also found that Yb can also be used to prepare a highly transparent cathode by coevaporating Yb and Ag to form a Yb:Ag alloy electrode. Surface-emitting (or top emission) and transparent (emission from both surfaces) OLEDs with low turn-on voltage (3.75 V) and high efficiency were prepared with the Yb:Ag electrode. {\textcopyright} 2002 Elsevier Science B.V. All rights reserved.",

author = "Lai, {S. L.} and Chan, {M. Y.} and Fung, {M. K.} and Lee, {C. S.} and Hung, {L. S.} and Lee, {S. T.}",

year = "2002",

month = nov,

day = "25",

doi = "10.1016/S0009-2614(02)01553-1",

language = "English",

volume = "366",

pages = "128--133",

journal = "Chemical Physics Letters",

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TY - JOUR

T1 - Applications of Ytterbium in organic light-emitting devices as high performance and transparent electrodes

AU - Lai, S. L.

AU - Chan, M. Y.

AU - Fung, M. K.

AU - Lee, C. S.

AU - Hung, L. S.

AU - Lee, S. T.

PY - 2002/11/25

Y1 - 2002/11/25

N2 - Potential applications of Ytterbium (Yb) in cathode system for organic optoelectronic/electronic devices were explored in NPB/Alq3 based bi-layer organic light-emitting devices (OLEDs). When a thin (14.5 nm) Yb layer capped with a thicker (200 nm) Ag layer was used as the cathode, the OLEDs show enhanced electron injection over those using the standard Mg:Ag cathode. Performance of the OLEDs with the Yb/Ag cathode is comparable to that using LiF/Al cathode. Interestingly, we also found that Yb can also be used to prepare a highly transparent cathode by coevaporating Yb and Ag to form a Yb:Ag alloy electrode. Surface-emitting (or top emission) and transparent (emission from both surfaces) OLEDs with low turn-on voltage (3.75 V) and high efficiency were prepared with the Yb:Ag electrode. © 2002 Elsevier Science B.V. All rights reserved.

AB - Potential applications of Ytterbium (Yb) in cathode system for organic optoelectronic/electronic devices were explored in NPB/Alq3 based bi-layer organic light-emitting devices (OLEDs). When a thin (14.5 nm) Yb layer capped with a thicker (200 nm) Ag layer was used as the cathode, the OLEDs show enhanced electron injection over those using the standard Mg:Ag cathode. Performance of the OLEDs with the Yb/Ag cathode is comparable to that using LiF/Al cathode. Interestingly, we also found that Yb can also be used to prepare a highly transparent cathode by coevaporating Yb and Ag to form a Yb:Ag alloy electrode. Surface-emitting (or top emission) and transparent (emission from both surfaces) OLEDs with low turn-on voltage (3.75 V) and high efficiency were prepared with the Yb:Ag electrode. © 2002 Elsevier Science B.V. All rights reserved.

UR - http://www.scopus.com/inward/record.url?scp=0037175354&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-0037175354&origin=recordpage

U2 - 10.1016/S0009-2614(02)01553-1

DO - 10.1016/S0009-2614(02)01553-1

M3 - RGC 21 - Publication in refereed journal

SN - 0009-2614

VL - 366

SP - 128

EP - 133

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-2

ER -

Applications of Ytterbium in organic light-emitting devices as high performance and transparent electrodes

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