Silane- and triazine-containing hole and exciton blocking material for high-efficiency phosphorescent organic light emitting diodes

Jae Wook Kang; Deug Sang Lee; Hyung Dol Park; Young Seo Park; Ji Whan Kim; Won Ik Jeong; Kyung Mo Yoo; Kyoungmoon Go; Se Hoon Kim; Jang Joo Kim

doi:10.1039/b705741e

Silane- and triazine-containing hole and exciton blocking material for high-efficiency phosphorescent organic light emitting diodes

Jae Wook Kang
, Deug Sang Lee
, Hyung Dol Park
, Young Seo Park
, Ji Whan Kim
, Won Ik Jeong
, Kyung Mo Yoo
, Kyoungmoon Go
, Se Hoon Kim
, Jang Joo Kim^*

^*Corresponding author for this work

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

89 Citations (Scopus)

Abstract

One of the important factors for high efficiency phosphorescent organic light-emitting devices is to confine triplet excitons within the emitting layer. We synthesized and characterized a new hole blocking material containing silane and triazine moieties, 2,4-diphenyl-6-(4′-triphenylsilanyl-biphenyl-4-yl) -1,3,5-triazine (DTBT). Electrophosphorescent devices fabricated using the material as the hole-blocking layer and N,N′-dicarbazolyl-4,4′- biphenyl (CBP) doped with fac-tris(2-phenylpyridine)iridium [Ir(ppy) ₃] as the emitting layer showed a maximum external quantum efficiency (η_ext) of 17.5% with a maximum power efficiency (η_p) of 47.8 lm W^-1, which are much higher than those of devices using bathcuproine (BCP) (η_ext = 14.5%, η_p = 40.0 lm W^-1) and 4-biphenyloxolate aluminium(iii) bis(2-methyl-8-quinolinato)-4-phenylphenolate (BAlq) (η_ext = 8.1%, η_p = 14.2 lm W^-1) as hole-blocking layers.

Original language	English
Pages (from-to)	3714-3719
Number of pages	6
Journal	Journal of Materials Chemistry
Volume	17
Issue number	35
DOIs	https://doi.org/10.1039/b705741e
Publication status	Published - 2007
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
Materials Chemistry

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@article{a734a0b6dbd94ddcb8a8ed1715e66f24,

title = "Silane- and triazine-containing hole and exciton blocking material for high-efficiency phosphorescent organic light emitting diodes",

abstract = "One of the important factors for high efficiency phosphorescent organic light-emitting devices is to confine triplet excitons within the emitting layer. We synthesized and characterized a new hole blocking material containing silane and triazine moieties, 2,4-diphenyl-6-(4′-triphenylsilanyl-biphenyl-4-yl) -1,3,5-triazine (DTBT). Electrophosphorescent devices fabricated using the material as the hole-blocking layer and N,N′-dicarbazolyl-4,4′- biphenyl (CBP) doped with fac-tris(2-phenylpyridine)iridium [Ir(ppy) 3] as the emitting layer showed a maximum external quantum efficiency (ηext) of 17.5\% with a maximum power efficiency (ηp) of 47.8 lm W-1, which are much higher than those of devices using bathcuproine (BCP) (ηext = 14.5\%, ηp = 40.0 lm W-1) and 4-biphenyloxolate aluminium(iii) bis(2-methyl-8-quinolinato)-4-phenylphenolate (BAlq) (ηext = 8.1\%, ηp = 14.2 lm W-1) as hole-blocking layers.",

author = "Kang, \{Jae Wook\} and Lee, \{Deug Sang\} and Park, \{Hyung Dol\} and Park, \{Young Seo\} and Kim, \{Ji Whan\} and Jeong, \{Won Ik\} and Yoo, \{Kyung Mo\} and Kyoungmoon Go and Kim, \{Se Hoon\} and Kim, \{Jang Joo\}",

year = "2007",

doi = "10.1039/b705741e",

language = "English",

volume = "17",

pages = "3714--3719",

journal = "Journal of Materials Chemistry",

issn = "0959-9428",

publisher = "Royal Society of Chemistry",

number = "35",

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TY - JOUR

T1 - Silane- and triazine-containing hole and exciton blocking material for high-efficiency phosphorescent organic light emitting diodes

AU - Kang, Jae Wook

AU - Lee, Deug Sang

AU - Park, Hyung Dol

AU - Park, Young Seo

AU - Kim, Ji Whan

AU - Jeong, Won Ik

AU - Yoo, Kyung Mo

AU - Go, Kyoungmoon

AU - Kim, Se Hoon

AU - Kim, Jang Joo

PY - 2007

Y1 - 2007

N2 - One of the important factors for high efficiency phosphorescent organic light-emitting devices is to confine triplet excitons within the emitting layer. We synthesized and characterized a new hole blocking material containing silane and triazine moieties, 2,4-diphenyl-6-(4′-triphenylsilanyl-biphenyl-4-yl) -1,3,5-triazine (DTBT). Electrophosphorescent devices fabricated using the material as the hole-blocking layer and N,N′-dicarbazolyl-4,4′- biphenyl (CBP) doped with fac-tris(2-phenylpyridine)iridium [Ir(ppy) 3] as the emitting layer showed a maximum external quantum efficiency (ηext) of 17.5% with a maximum power efficiency (ηp) of 47.8 lm W-1, which are much higher than those of devices using bathcuproine (BCP) (ηext = 14.5%, ηp = 40.0 lm W-1) and 4-biphenyloxolate aluminium(iii) bis(2-methyl-8-quinolinato)-4-phenylphenolate (BAlq) (ηext = 8.1%, ηp = 14.2 lm W-1) as hole-blocking layers.

AB - One of the important factors for high efficiency phosphorescent organic light-emitting devices is to confine triplet excitons within the emitting layer. We synthesized and characterized a new hole blocking material containing silane and triazine moieties, 2,4-diphenyl-6-(4′-triphenylsilanyl-biphenyl-4-yl) -1,3,5-triazine (DTBT). Electrophosphorescent devices fabricated using the material as the hole-blocking layer and N,N′-dicarbazolyl-4,4′- biphenyl (CBP) doped with fac-tris(2-phenylpyridine)iridium [Ir(ppy) 3] as the emitting layer showed a maximum external quantum efficiency (ηext) of 17.5% with a maximum power efficiency (ηp) of 47.8 lm W-1, which are much higher than those of devices using bathcuproine (BCP) (ηext = 14.5%, ηp = 40.0 lm W-1) and 4-biphenyloxolate aluminium(iii) bis(2-methyl-8-quinolinato)-4-phenylphenolate (BAlq) (ηext = 8.1%, ηp = 14.2 lm W-1) as hole-blocking layers.

UR - https://www.scopus.com/pages/publications/34548211300

U2 - 10.1039/b705741e

DO - 10.1039/b705741e

M3 - Article

AN - SCOPUS:34548211300

SN - 0959-9428

VL - 17

SP - 3714

EP - 3719

JO - Journal of Materials Chemistry

JF - Journal of Materials Chemistry

IS - 35

ER -

Silane- and triazine-containing hole and exciton blocking material for high-efficiency phosphorescent organic light emitting diodes

Abstract

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