Deep-blue light emission with a wide-bandgap naphthalene-derivative liquid organic semiconductor host

Naofumi Kobayashi*, Hiroyuki Kuwae, Juro Oshima, Ryoichi Ishimatsu, Shuya Tashiro, Toshihiko Imato, Chihaya Adachi, Shuichi Shoji, Jun Mizuno

*この研究の対応する著者

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

We developed a novel naphthalene-derivative to function as a wide-bandgap liquid organic semiconductor (LOS) host material for the limited range of liquid deep-blue light-emitting materials that have been developed to date. The naphthalene-derivative, 1-naphthaleneacetic acid 2-ethylhexyl ester (NLQ) was synthesized as a LOS, by introducing an ethylhexyl group into naphthalene. 9,10-Diphenyl anthracene (DPA) was doped into NLQ as a guest deep-blue dye. From the absorption spectrum, the bandgap energy of NLQ was estimated to be 4.13 eV, indicating that NLQ has the widest bandgap energy of any such host material so far as we know. Deep-blue electroluminescence (EL) emission in a liquid state was obtained by doping DPA into NLQ. Light emission could be achieved by a combination of Förster resonance energy transfer and direct recombination of trapped holes and electrons because the bandgap energy of DPA is straddle by that of the wide-bandgap NLQ. Thus, NLQ is shown to be a promising wide-bandgap LOS host material, which allows deep-blue light emission and may have applications in liquid organic light-emitting diodes.

本文言語English
ホスト出版物のタイトルOrganic Photonic Materials and Devices XIX 2017
出版社SPIE
10101
ISBN(電子版)9781510606432
DOI
出版ステータスPublished - 2017
イベントOrganic Photonic Materials and Devices XIX 2017 - San Francisco, United States
継続期間: 2017 1 302017 2 1

Other

OtherOrganic Photonic Materials and Devices XIX 2017
国/地域United States
CitySan Francisco
Period17/1/3017/2/1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

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