A new approach to design light emitting devices using electroactive dyes

Michael Pan; Amitava Patra; Christopher S. Friend; Tzu Chau Lin; Alexander N. Cartwright; N. Paras Prasad; Ryszard Burzynski

A new approach to design light emitting devices using electroactive dyes

Michael Pan, Amitava Patra, Christopher S. Friend, Tzu Chau Lin, Alexander N. Cartwright, N. Paras Prasad, Ryszard Burzynski

Department of Chemistry

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

1 Scopus citations

Abstract

Organic electroluminescence (EL) single layer devices using clectroactive dyes incorporated in poly-vinylcarbazole (PVK) were fabricated. The molecular structures of the two-photon dyes are the generic D-π-A, D-π-D, and A-π-A, structural motif, composed of a diphenylamine donor (D), a distyrylfluorene π-bridge, and an oxadiazole acceptor (A). A single layer type of EL device of ITO/PVK:DYE/Ca/Al was fabricated. The light emission peak and the threshold of the electroluminescence emission depend on the structure and concentration of the dye. The EL intensity increases with the dye concentration and it was found that as the voltage is increased the brightness increases and reaches a value 498 cd/m² at an applied voltage of 25 V for the D-π-A dye. We present a physical explanation of this observed behavior and show that this has significant impact on the design of light emitting devices using these organic dyes.

Original language	English
Pages (from-to)	273-278
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	734
State	Published - 2003
Event	Polymer/Metal Interfaces and Defect Mediated Phenomena in Ordered Polymers - Boston, MA, United States Duration: 2 Dec 2002 → 6 Dec 2002

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title = "A new approach to design light emitting devices using electroactive dyes",

abstract = "Organic electroluminescence (EL) single layer devices using clectroactive dyes incorporated in poly-vinylcarbazole (PVK) were fabricated. The molecular structures of the two-photon dyes are the generic D-π-A, D-π-D, and A-π-A, structural motif, composed of a diphenylamine donor (D), a distyrylfluorene π-bridge, and an oxadiazole acceptor (A). A single layer type of EL device of ITO/PVK:DYE/Ca/Al was fabricated. The light emission peak and the threshold of the electroluminescence emission depend on the structure and concentration of the dye. The EL intensity increases with the dye concentration and it was found that as the voltage is increased the brightness increases and reaches a value 498 cd/m2 at an applied voltage of 25 V for the D-π-A dye. We present a physical explanation of this observed behavior and show that this has significant impact on the design of light emitting devices using these organic dyes.",

author = "Michael Pan and Amitava Patra and Friend, {Christopher S.} and Lin, {Tzu Chau} and Cartwright, {Alexander N.} and Prasad, {N. Paras} and Ryszard Burzynski",

year = "2003",

language = "???core.languages.en_GB???",

volume = "734",

pages = "273--278",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

note = "null ; Conference date: 02-12-2002 Through 06-12-2002",

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A new approach to design light emitting devices using electroactive dyes. / Pan, Michael; Patra, Amitava; Friend, Christopher S.; Lin, Tzu Chau; Cartwright, Alexander N.; Prasad, N. Paras; Burzynski, Ryszard.

In: Materials Research Society Symposium - Proceedings, Vol. 734, 2003, p. 273-278.

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

TY - JOUR

T1 - A new approach to design light emitting devices using electroactive dyes

AU - Pan, Michael

AU - Patra, Amitava

AU - Friend, Christopher S.

AU - Lin, Tzu Chau

AU - Cartwright, Alexander N.

AU - Prasad, N. Paras

AU - Burzynski, Ryszard

PY - 2003

Y1 - 2003

N2 - Organic electroluminescence (EL) single layer devices using clectroactive dyes incorporated in poly-vinylcarbazole (PVK) were fabricated. The molecular structures of the two-photon dyes are the generic D-π-A, D-π-D, and A-π-A, structural motif, composed of a diphenylamine donor (D), a distyrylfluorene π-bridge, and an oxadiazole acceptor (A). A single layer type of EL device of ITO/PVK:DYE/Ca/Al was fabricated. The light emission peak and the threshold of the electroluminescence emission depend on the structure and concentration of the dye. The EL intensity increases with the dye concentration and it was found that as the voltage is increased the brightness increases and reaches a value 498 cd/m2 at an applied voltage of 25 V for the D-π-A dye. We present a physical explanation of this observed behavior and show that this has significant impact on the design of light emitting devices using these organic dyes.

AB - Organic electroluminescence (EL) single layer devices using clectroactive dyes incorporated in poly-vinylcarbazole (PVK) were fabricated. The molecular structures of the two-photon dyes are the generic D-π-A, D-π-D, and A-π-A, structural motif, composed of a diphenylamine donor (D), a distyrylfluorene π-bridge, and an oxadiazole acceptor (A). A single layer type of EL device of ITO/PVK:DYE/Ca/Al was fabricated. The light emission peak and the threshold of the electroluminescence emission depend on the structure and concentration of the dye. The EL intensity increases with the dye concentration and it was found that as the voltage is increased the brightness increases and reaches a value 498 cd/m2 at an applied voltage of 25 V for the D-π-A dye. We present a physical explanation of this observed behavior and show that this has significant impact on the design of light emitting devices using these organic dyes.

UR - http://www.scopus.com/inward/record.url?scp=0038649949&partnerID=8YFLogxK

M3 - 會議論文

AN - SCOPUS:0038649949

VL - 734

SP - 273

EP - 278

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

SN - 0272-9172

Y2 - 2 December 2002 through 6 December 2002

ER -

A new approach to design light emitting devices using electroactive dyes

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