Low-threshold blue emission from first-order organic DFB laser using 2,7-bis[4-(N-carbazole)phenylvinyl]- 9,9′-spirobifluorene as active gain medium

Masaya Hirade, Hajime Nakanotani, Reiji Hattori, Akihiro Ikeda, Masayuki Yahiro, Chihaya Adachi

研究成果: ジャーナルへの寄稿学術誌査読

抄録

We demonstrate optically excited lasing by an organic semiconducting thin-film based on 2,7-bis[4-(N-carbazole)phenylvinyl]-9,9′- spirobifluorene (spiro-SBCz) as an active gain medium with a first-order distributed feedback (DFB) reflector. We prepared DFB reflectors with periods from 132.5 to 145.00nm and grooves from 70 to 140nm depth by using electron-beam-lithography and plasma-etching techniques. The laser having a reflector with a 145.0nm period had a lasing threshold of 0.72±0.07 μJ=cm2, 83% lower than its threshold of amplified spontaneous emission (4.1±0.4 μJ=cm2).

本文言語英語
ページ(範囲)1-8
ページ数8
ジャーナルMolecular Crystals and Liquid Crystals
504
1
DOI
出版ステータス出版済み - 1月 1 2009

!!!All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

フィンガープリント

「Low-threshold blue emission from first-order organic DFB laser using 2,7-bis[4-(N-carbazole)phenylvinyl]- 9,9′-spirobifluorene as active gain medium」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル