100% fluorescence efficiency of 4, 4′ -bis[(N-carbazole)styryl] biphenyl in a solid film and the very low amplified spontaneous emission threshold

Takanori Aimono; Yuichiro Kawamura; Kenichi Goushi; Hidetoshi Yamamoto; Hiroyuki Sasabe; Chihaya Adachi

doi:10.1063/1.1867555

100% fluorescence efficiency of 4, 4′ -bis[(N-carbazole)styryl] biphenyl in a solid film and the very low amplified spontaneous emission threshold

Takanori Aimono, Yuichiro Kawamura, Kenichi Goushi, Hidetoshi Yamamoto, Hiroyuki Sasabe, Chihaya Adachi

研究成果: ジャーナルへの寄稿 › 学術誌 › 査読

111 被引用数 (Scopus)

抄録

We examined the amplified spontaneous emission (ASE) characteristics of fluorescent styrylbenzene derivatives doped into a 4, 4′ -di(N-carbazolyl)biphenyl (CBP) host. In particular, 4, 4′ -bis[(N-carbazole)styryl]biphenyl (BSB-Cz) demonstrated an extremely low ASE threshold of Eth =0.32±0.05 μJ cm2. We observed that the 6 wt %-BSB-Cz:CBP film has an ultimate photoluminescence (PL) quantum efficiency of φPL =100% and a short transient lifetime of τf =1.0±0.1 ns, leading to a large radiative decay rate of kr =1× 109 s-1. We demonstrated that the extremely low ASE threshold originated from the large radiative decay rate of BSB-Cz.

本文言語	英語
論文番号	071110
ページ（範囲）	1-3
ページ数	3
ジャーナル	Applied Physics Letters
巻	86
号	7
DOI	https://doi.org/10.1063/1.1867555
出版ステータス	出版済み - 2月 14 2005
外部発表	はい

All Science Journal Classification (ASJC) codes

物理学および天文学（その他）

文献へのアクセス

10.1063/1.1867555

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引用スタイル

100% fluorescence efficiency of 4, 4′ -bis[(N-carbazole)styryl] biphenyl in a solid film and the very low amplified spontaneous emission threshold. / Aimono, Takanori; Kawamura, Yuichiro; Goushi, Kenichi; Yamamoto, Hidetoshi; Sasabe, Hiroyuki; Adachi, Chihaya.

In: Applied Physics Letters, Vol. 86, No. 7, 071110, 14.02.2005, p. 1-3.

研究成果: ジャーナルへの寄稿 › 学術誌 › 査読

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abstract = "We examined the amplified spontaneous emission (ASE) characteristics of fluorescent styrylbenzene derivatives doped into a 4, 4′ -di(N-carbazolyl)biphenyl (CBP) host. In particular, 4, 4′ -bis[(N-carbazole)styryl]biphenyl (BSB-Cz) demonstrated an extremely low ASE threshold of Eth =0.32±0.05 μJ cm2. We observed that the 6 wt %-BSB-Cz:CBP film has an ultimate photoluminescence (PL) quantum efficiency of φPL =100% and a short transient lifetime of τf =1.0±0.1 ns, leading to a large radiative decay rate of kr =1× 109 s-1. We demonstrated that the extremely low ASE threshold originated from the large radiative decay rate of BSB-Cz.",

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AU - Goushi, Kenichi

AU - Yamamoto, Hidetoshi

AU - Sasabe, Hiroyuki

AU - Adachi, Chihaya

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