Organic light-emitting diodes: Multiscale charge transport simulation and fabrication of new thermally activated delayed fluorescence (TADF) materials

Hironori Kaji, Katsuyuki Shizu, Furitsu Suzuki, Tatsuya Fukushima, Katsuaki Suzuki, Chihaya Adachi

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

Charge transports in amorphous thin films with 100 nm thickness are investigated in silico by explicitly considering organic molecules. The amorphous layer of organic molecules was constructed using molecular dynamics simulations. The rate constants for charge hopping between two organic molecules, extracted from the amorphous layers, were calculated based on quantum chemical calculations. The hopping transport in amorphous layers was simulated using a Monte Carlo method. The hole mobility was calculated to be several times larger than the electron mobility, which was consistent with the experimental results. The Monte Carlo simulation also shows that diffusion transport is dominant at low applied electric fields and that contribution of drift transport increases at high electric fields. The simulation in this study enables us to reveal molecular origin of charge transport. In the presentation, we will show the results on recently-developed new thermally activated delayed fluorescence materials and the device performances.

本文言語英語
ホスト出版物のタイトルOrganic Light Emitting Materials and Devices XIX
編集者Franky So
出版社SPIE
ISBN(電子版)9781628417326
DOI
出版ステータス出版済み - 2015
イベントOrganic Light Emitting Materials and Devices XIX - San Diego, 米国
継続期間: 8 9 20158 11 2015

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
9566
ISSN(印刷版)0277-786X
ISSN(電子版)1996-756X

その他

その他Organic Light Emitting Materials and Devices XIX
国/地域米国
CitySan Diego
Period8/9/158/11/15

All Science Journal Classification (ASJC) codes

  • 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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