Influence of layer thickness to the emission spectra in microcavity organic light emitting diodes

C. Y. Kwong; A. B. Djurišić; C. H. Cheung; J. Chan; A. D. Rakić; Hoi Lam TAM; Kok Wai CHEAH; Z. T. Liu; W. K. Chan; P. C. Chui

doi:10.1109/COMMAD.2004.1577562

Influence of layer thickness to the emission spectra in microcavity organic light emitting diodes

C. Y. Kwong, A. B. Djurišić, C. H. Cheung, J. Chan, A. D. Rakić, Hoi Lam TAM, Kok Wai CHEAH, Z. T. Liu, W. K. Chan, P. C. Chui

Department of Physics

Research output: Chapter in book/report/conference proceeding › Conference proceeding › peer-review

Abstract

Microcavity organic light emitting diodes (OLEDs) have attracted great attention because they can reduce the width of emission spectra from organic materials, enhance brightness and achieve multipeak emission from the same material. In this work, we have fabricated microcavity OLEDs with widely used organic materials, such as N,N′-di(naphthalene-1-yl)-N,N′- diphenylbenzidine (NPB) as a hole transport layer and tris (8-hydroxyquinoline) (Alq) as emitting and electron transporting layer. These organic materials are sandwiched either between two thick silver mirrors or one thin copper and one thick silver mirrors. The influence of total cavity length (from 164 nm to 243nm) and the cavity Q-factor to the emission behavior has been investigated. In all cases, an OLED without bottom mirror, i.e. with the organic materials sandwiched between indium tin oxide and a thick silver mirror, has been fabricated for comparison. We have characterized the devices with photoluminescence, electroluminescence, and reflectance measurements. Multiple peaks have been observed for some devices at larger viewing angles.

Original language	English
Title of host publication	COMMAD04 - 2004 Conference on Optoelectronic and Microelectronic Materials and Devices -Proceedings
Pages	347-350
Number of pages	4
DOIs	https://doi.org/10.1109/COMMAD.2004.1577562
Publication status	Published - 2005
Event	COMMAD04 - 2004 Conference on Optoelectronic and Microelectronic Materials and Devices - Bribane, QLD, Australia Duration: 8 Dec 2004 → 10 Dec 2004

Publication series

Name	Conference on Optoelectronic and Microelectronic Materials and Devices, Proceedings, COMMAD

Conference

Conference	COMMAD04 - 2004 Conference on Optoelectronic and Microelectronic Materials and Devices
Country/Territory	Australia
City	Bribane, QLD
Period	8/12/04 → 10/12/04

Scopus Subject Areas

Electronic, Optical and Magnetic Materials

User-Defined Keywords

Microcavity
OLED

Access to Document

10.1109/COMMAD.2004.1577562

Cite this

Kwong, C. Y., Djurišić, A. B., Cheung, C. H., Chan, J., Rakić, A. D., TAM, H. L., CHEAH, K. W., Liu, Z. T., Chan, W. K., & Chui, P. C. (2005). Influence of layer thickness to the emission spectra in microcavity organic light emitting diodes. In COMMAD04 - 2004 Conference on Optoelectronic and Microelectronic Materials and Devices -Proceedings (pp. 347-350). Article 1577562 (Conference on Optoelectronic and Microelectronic Materials and Devices, Proceedings, COMMAD). https://doi.org/10.1109/COMMAD.2004.1577562

Kwong, C. Y. ; Djurišić, A. B. ; Cheung, C. H. et al. / Influence of layer thickness to the emission spectra in microcavity organic light emitting diodes. COMMAD04 - 2004 Conference on Optoelectronic and Microelectronic Materials and Devices -Proceedings. 2005. pp. 347-350 (Conference on Optoelectronic and Microelectronic Materials and Devices, Proceedings, COMMAD).

@inproceedings{219ef9c6fa3d47c29ddd9721fb5fdf06,

title = "Influence of layer thickness to the emission spectra in microcavity organic light emitting diodes",

abstract = "Microcavity organic light emitting diodes (OLEDs) have attracted great attention because they can reduce the width of emission spectra from organic materials, enhance brightness and achieve multipeak emission from the same material. In this work, we have fabricated microcavity OLEDs with widely used organic materials, such as N,N′-di(naphthalene-1-yl)-N,N′- diphenylbenzidine (NPB) as a hole transport layer and tris (8-hydroxyquinoline) (Alq) as emitting and electron transporting layer. These organic materials are sandwiched either between two thick silver mirrors or one thin copper and one thick silver mirrors. The influence of total cavity length (from 164 nm to 243nm) and the cavity Q-factor to the emission behavior has been investigated. In all cases, an OLED without bottom mirror, i.e. with the organic materials sandwiched between indium tin oxide and a thick silver mirror, has been fabricated for comparison. We have characterized the devices with photoluminescence, electroluminescence, and reflectance measurements. Multiple peaks have been observed for some devices at larger viewing angles.",

keywords = "Microcavity, OLED",

author = "Kwong, {C. Y.} and Djuri{\v s}i{\'c}, {A. B.} and Cheung, {C. H.} and J. Chan and Raki{\'c}, {A. D.} and TAM, {Hoi Lam} and CHEAH, {Kok Wai} and Liu, {Z. T.} and Chan, {W. K.} and Chui, {P. C.}",

note = "Copyright: Copyright 2008 Elsevier B.V., All rights reserved.; COMMAD04 - 2004 Conference on Optoelectronic and Microelectronic Materials and Devices ; Conference date: 08-12-2004 Through 10-12-2004",

year = "2005",

doi = "10.1109/COMMAD.2004.1577562",

language = "English",

isbn = "0780388208",

series = "Conference on Optoelectronic and Microelectronic Materials and Devices, Proceedings, COMMAD",

pages = "347--350",

booktitle = "COMMAD04 - 2004 Conference on Optoelectronic and Microelectronic Materials and Devices -Proceedings",

}

Kwong, CY, Djurišić, AB, Cheung, CH, Chan, J, Rakić, AD, TAM, HL, CHEAH, KW, Liu, ZT, Chan, WK & Chui, PC 2005, Influence of layer thickness to the emission spectra in microcavity organic light emitting diodes. in COMMAD04 - 2004 Conference on Optoelectronic and Microelectronic Materials and Devices -Proceedings., 1577562, Conference on Optoelectronic and Microelectronic Materials and Devices, Proceedings, COMMAD, pp. 347-350, COMMAD04 - 2004 Conference on Optoelectronic and Microelectronic Materials and Devices, Bribane, QLD, Australia, 8/12/04. https://doi.org/10.1109/COMMAD.2004.1577562

Influence of layer thickness to the emission spectra in microcavity organic light emitting diodes. / Kwong, C. Y.; Djurišić, A. B.; Cheung, C. H. et al.
COMMAD04 - 2004 Conference on Optoelectronic and Microelectronic Materials and Devices -Proceedings. 2005. p. 347-350 1577562 (Conference on Optoelectronic and Microelectronic Materials and Devices, Proceedings, COMMAD).

Research output: Chapter in book/report/conference proceeding › Conference proceeding › peer-review

TY - GEN

T1 - Influence of layer thickness to the emission spectra in microcavity organic light emitting diodes

AU - Kwong, C. Y.

AU - Djurišić, A. B.

AU - Cheung, C. H.

AU - Chan, J.

AU - Rakić, A. D.

AU - TAM, Hoi Lam

AU - CHEAH, Kok Wai

AU - Liu, Z. T.

AU - Chan, W. K.

AU - Chui, P. C.

PY - 2005

Y1 - 2005

N2 - Microcavity organic light emitting diodes (OLEDs) have attracted great attention because they can reduce the width of emission spectra from organic materials, enhance brightness and achieve multipeak emission from the same material. In this work, we have fabricated microcavity OLEDs with widely used organic materials, such as N,N′-di(naphthalene-1-yl)-N,N′- diphenylbenzidine (NPB) as a hole transport layer and tris (8-hydroxyquinoline) (Alq) as emitting and electron transporting layer. These organic materials are sandwiched either between two thick silver mirrors or one thin copper and one thick silver mirrors. The influence of total cavity length (from 164 nm to 243nm) and the cavity Q-factor to the emission behavior has been investigated. In all cases, an OLED without bottom mirror, i.e. with the organic materials sandwiched between indium tin oxide and a thick silver mirror, has been fabricated for comparison. We have characterized the devices with photoluminescence, electroluminescence, and reflectance measurements. Multiple peaks have been observed for some devices at larger viewing angles.

AB - Microcavity organic light emitting diodes (OLEDs) have attracted great attention because they can reduce the width of emission spectra from organic materials, enhance brightness and achieve multipeak emission from the same material. In this work, we have fabricated microcavity OLEDs with widely used organic materials, such as N,N′-di(naphthalene-1-yl)-N,N′- diphenylbenzidine (NPB) as a hole transport layer and tris (8-hydroxyquinoline) (Alq) as emitting and electron transporting layer. These organic materials are sandwiched either between two thick silver mirrors or one thin copper and one thick silver mirrors. The influence of total cavity length (from 164 nm to 243nm) and the cavity Q-factor to the emission behavior has been investigated. In all cases, an OLED without bottom mirror, i.e. with the organic materials sandwiched between indium tin oxide and a thick silver mirror, has been fabricated for comparison. We have characterized the devices with photoluminescence, electroluminescence, and reflectance measurements. Multiple peaks have been observed for some devices at larger viewing angles.

KW - Microcavity

KW - OLED

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U2 - 10.1109/COMMAD.2004.1577562

DO - 10.1109/COMMAD.2004.1577562

M3 - Conference proceeding

AN - SCOPUS:46149114367

SN - 0780388208

SN - 9780780388208

T3 - Conference on Optoelectronic and Microelectronic Materials and Devices, Proceedings, COMMAD

SP - 347

EP - 350

BT - COMMAD04 - 2004 Conference on Optoelectronic and Microelectronic Materials and Devices -Proceedings

T2 - COMMAD04 - 2004 Conference on Optoelectronic and Microelectronic Materials and Devices

Y2 - 8 December 2004 through 10 December 2004

ER -

Kwong CY, Djurišić AB, Cheung CH, Chan J, Rakić AD, TAM HL et al. Influence of layer thickness to the emission spectra in microcavity organic light emitting diodes. In COMMAD04 - 2004 Conference on Optoelectronic and Microelectronic Materials and Devices -Proceedings. 2005. p. 347-350. 1577562. (Conference on Optoelectronic and Microelectronic Materials and Devices, Proceedings, COMMAD). doi: 10.1109/COMMAD.2004.1577562

Influence of layer thickness to the emission spectra in microcavity organic light emitting diodes

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