High Efficiency Polymer-Based Electrophosphorescent Organic Light-Emitting Diode

Haiying Cheng; Hoi Sing Kwok; Benzhong Tang; Man Wong

doi:10.1889/1.1832325

High Efficiency Polymer-Based Electrophosphorescent Organic Light-Emitting Diode

Haiying Cheng, Hoi Sing Kwok, Benzhong Tang, Man Wong

The Hong Kong University of Science and Technology

Research output: Contribution to conference › Conference Paper

Abstract

We investigate the characteristics of an organic light-emitting diode with phosphorescent polymer. Two types of double layer diodes based on poly(9-vinylcarbazole) (PVK) doped with phosphorescent fac tris(2-phenylpyridine) iridium (III) [Ir(ppy)₃]/aluminum (III) bis(2-methyl-8-quinolinato) 4-phenylphenolate (BAlq) and [PVK doped Ir(ppy)₃]/Alq₃ have been investigated. It is found that BAlq can serve as an electron transport layer as well as a hole blocking layer. At the optimal dopant concentration, a high efficiency OLED can be obtained. At 2wt% Ir(ppy)₃, an effective external quantum efficiency of 10% photons/electron, a low turn-on voltage of 6V and a luminance power efficiency of 7.3L/W can be achieved.

Original language	English
Pages	512-515
DOIs	https://doi.org/10.1889/1.1832325
Publication status	Published - May 2003
Event	SID Symposium Digest of Technical Papers - Duration: 1 May 2003 → 1 May 2003

Conference

Conference	SID Symposium Digest of Technical Papers
Period	1/05/03 → 1/05/03

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10.1889/1.1832325

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@conference{ba81daf299b4444f8f39d5c622904a76,

title = "High Efficiency Polymer-Based Electrophosphorescent Organic Light-Emitting Diode",

abstract = "We investigate the characteristics of an organic light-emitting diode with phosphorescent polymer. Two types of double layer diodes based on poly(9-vinylcarbazole) (PVK) doped with phosphorescent fac tris(2-phenylpyridine) iridium (III) [Ir(ppy)3]/aluminum (III) bis(2-methyl-8-quinolinato) 4-phenylphenolate (BAlq) and [PVK doped Ir(ppy)3]/Alq3 have been investigated. It is found that BAlq can serve as an electron transport layer as well as a hole blocking layer. At the optimal dopant concentration, a high efficiency OLED can be obtained. At 2wt\% Ir(ppy)3, an effective external quantum efficiency of 10\% photons/electron, a low turn-on voltage of 6V and a luminance power efficiency of 7.3L/W can be achieved.",

author = "Haiying Cheng and Kwok, \{Hoi Sing\} and Benzhong Tang and Man Wong",

year = "2003",

month = may,

doi = "10.1889/1.1832325",

language = "English",

pages = "512--515",

note = "SID Symposium Digest of Technical Papers ; Conference date: 01-05-2003 Through 01-05-2003",

}

TY - CONF

T1 - High Efficiency Polymer-Based Electrophosphorescent Organic Light-Emitting Diode

AU - Cheng, Haiying

AU - Kwok, Hoi Sing

AU - Tang, Benzhong

AU - Wong, Man

PY - 2003/5

Y1 - 2003/5

N2 - We investigate the characteristics of an organic light-emitting diode with phosphorescent polymer. Two types of double layer diodes based on poly(9-vinylcarbazole) (PVK) doped with phosphorescent fac tris(2-phenylpyridine) iridium (III) [Ir(ppy)3]/aluminum (III) bis(2-methyl-8-quinolinato) 4-phenylphenolate (BAlq) and [PVK doped Ir(ppy)3]/Alq3 have been investigated. It is found that BAlq can serve as an electron transport layer as well as a hole blocking layer. At the optimal dopant concentration, a high efficiency OLED can be obtained. At 2wt% Ir(ppy)3, an effective external quantum efficiency of 10% photons/electron, a low turn-on voltage of 6V and a luminance power efficiency of 7.3L/W can be achieved.

AB - We investigate the characteristics of an organic light-emitting diode with phosphorescent polymer. Two types of double layer diodes based on poly(9-vinylcarbazole) (PVK) doped with phosphorescent fac tris(2-phenylpyridine) iridium (III) [Ir(ppy)3]/aluminum (III) bis(2-methyl-8-quinolinato) 4-phenylphenolate (BAlq) and [PVK doped Ir(ppy)3]/Alq3 have been investigated. It is found that BAlq can serve as an electron transport layer as well as a hole blocking layer. At the optimal dopant concentration, a high efficiency OLED can be obtained. At 2wt% Ir(ppy)3, an effective external quantum efficiency of 10% photons/electron, a low turn-on voltage of 6V and a luminance power efficiency of 7.3L/W can be achieved.

UR - https://openalex.org/W2030046397

U2 - 10.1889/1.1832325

DO - 10.1889/1.1832325

M3 - Conference Paper

SP - 512

EP - 515

T2 - SID Symposium Digest of Technical Papers

Y2 - 1 May 2003 through 1 May 2003

ER -

High Efficiency Polymer-Based Electrophosphorescent Organic Light-Emitting Diode

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