Electroluminescence of blends of hole-transporting polymer and hole-blocking polymer

Shengyi Yang; Yan Jiang; Zheng Xu; Feng Teng; Yanbing Hou; Xurong Xu

doi:10.1016/j.physb.2005.11.160

Electroluminescence of blends of hole-transporting polymer and hole-blocking polymer

Shengyi Yang^*, Yan Jiang, Zheng Xu, Feng Teng, Yanbing Hou, Xurong Xu

^*Corresponding author for this work

Beijing Jiaotong University

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

In this paper, the electroluminescence (EL) of the blends of a hole-transporting polymer and a hole-blocking polymer, i.e. poly (N-vinyl-carbazole) (PVK) and 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), in different weight ratios (k=M_PVK:M_BCP) is reported. Being different from the photoluminescence (PL) of PVK film and BCP film, the EL spectrum of device ITO/Blend/Alq₃(15 nm)/Al (peaks at around 520 nm) where blend in weight ratios of k=1:1, k=2:1 and k=3:1, respectively, is different from that of blends in weight ratios of k=1:2 and k=1:3. By sandwiching another hole-blocking (BCP) layer, it peaks at around 500 nm for ITO/Blend/BCP(20 nm)/Alq₃(12 nm)/Al under high electric field for blends in all the above weight ratios and it is suggested that this emission peaking at around 500 nm is from BCP in the blends layer.

Original language	English
Pages (from-to)	229-232
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	373
Issue number	2
DOIs	https://doi.org/10.1016/j.physb.2005.11.160
Publication status	Published - 15 Mar 2006
Externally published	Yes

Keywords

2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP)
Electroluminescence (EL)
Organic light-emitting diodes (OLEDS)
Poly-(N-vinyl- carbazole) (PVK)

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10.1016/j.physb.2005.11.160

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@article{5c481a41641647678d376f139af46c64,

title = "Electroluminescence of blends of hole-transporting polymer and hole-blocking polymer",

abstract = "In this paper, the electroluminescence (EL) of the blends of a hole-transporting polymer and a hole-blocking polymer, i.e. poly (N-vinyl-carbazole) (PVK) and 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), in different weight ratios (k=MPVK:MBCP) is reported. Being different from the photoluminescence (PL) of PVK film and BCP film, the EL spectrum of device ITO/Blend/Alq3(15 nm)/Al (peaks at around 520 nm) where blend in weight ratios of k=1:1, k=2:1 and k=3:1, respectively, is different from that of blends in weight ratios of k=1:2 and k=1:3. By sandwiching another hole-blocking (BCP) layer, it peaks at around 500 nm for ITO/Blend/BCP(20 nm)/Alq3(12 nm)/Al under high electric field for blends in all the above weight ratios and it is suggested that this emission peaking at around 500 nm is from BCP in the blends layer.",

keywords = "2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), Electroluminescence (EL), Organic light-emitting diodes (OLEDS), Poly-(N-vinyl- carbazole) (PVK)",

author = "Shengyi Yang and Yan Jiang and Zheng Xu and Feng Teng and Yanbing Hou and Xurong Xu",

year = "2006",

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day = "15",

doi = "10.1016/j.physb.2005.11.160",

language = "English",

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journal = "Physica B: Condensed Matter",

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number = "2",

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T1 - Electroluminescence of blends of hole-transporting polymer and hole-blocking polymer

AU - Yang, Shengyi

AU - Jiang, Yan

AU - Xu, Zheng

AU - Teng, Feng

AU - Hou, Yanbing

AU - Xu, Xurong

PY - 2006/3/15

Y1 - 2006/3/15

N2 - In this paper, the electroluminescence (EL) of the blends of a hole-transporting polymer and a hole-blocking polymer, i.e. poly (N-vinyl-carbazole) (PVK) and 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), in different weight ratios (k=MPVK:MBCP) is reported. Being different from the photoluminescence (PL) of PVK film and BCP film, the EL spectrum of device ITO/Blend/Alq3(15 nm)/Al (peaks at around 520 nm) where blend in weight ratios of k=1:1, k=2:1 and k=3:1, respectively, is different from that of blends in weight ratios of k=1:2 and k=1:3. By sandwiching another hole-blocking (BCP) layer, it peaks at around 500 nm for ITO/Blend/BCP(20 nm)/Alq3(12 nm)/Al under high electric field for blends in all the above weight ratios and it is suggested that this emission peaking at around 500 nm is from BCP in the blends layer.

AB - In this paper, the electroluminescence (EL) of the blends of a hole-transporting polymer and a hole-blocking polymer, i.e. poly (N-vinyl-carbazole) (PVK) and 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), in different weight ratios (k=MPVK:MBCP) is reported. Being different from the photoluminescence (PL) of PVK film and BCP film, the EL spectrum of device ITO/Blend/Alq3(15 nm)/Al (peaks at around 520 nm) where blend in weight ratios of k=1:1, k=2:1 and k=3:1, respectively, is different from that of blends in weight ratios of k=1:2 and k=1:3. By sandwiching another hole-blocking (BCP) layer, it peaks at around 500 nm for ITO/Blend/BCP(20 nm)/Alq3(12 nm)/Al under high electric field for blends in all the above weight ratios and it is suggested that this emission peaking at around 500 nm is from BCP in the blends layer.

KW - 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP)

KW - Electroluminescence (EL)

KW - Organic light-emitting diodes (OLEDS)

KW - Poly-(N-vinyl- carbazole) (PVK)

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DO - 10.1016/j.physb.2005.11.160

M3 - Article

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SP - 229

EP - 232

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 2

ER -

Electroluminescence of blends of hole-transporting polymer and hole-blocking polymer

Abstract

Keywords

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