ノグチ　ユタカ   NOGUCHI Yutaka   野口　裕    所属   明治大学  理工学部    職種   専任教授
言語種別	英語
発行・発表の年月	2021/07
形態種別	学術雑誌
査読	査読あり
標題	Active refractive index control using a stably evaporable perfluororesin for high-outcoupling-efficiency organic light-emitting diodes
執筆形態	共著(筆頭者以外)
掲載誌名	Journal of Materials Chemistry C
掲載区分	国外
出版社・発行元	Royal Society of Chemistry
巻・号・頁	9,pp.11115-11125
総ページ数	11
担当区分	最終著者
著者・共著者	Daisuke Yokoyama, Tatsuki Sasaki, Yasutaka Suzuki, Takefumi Abe, Kaori Tsuruoka, Tatsuya Miyajima, Toshifumi Kakiuchi, Chiho Morita, Masaharu Aoki, Yasuhiro Ouchi, Wataru Aita, Yasuhiro Kuwana, Yutaka Noguchi
概要	Here, a method is proposed for outcoupling enhancement that actively controls the refractive index of a hole transport layer (HTL) in OLEDs using a stably evaporable perfluororesin, which has a low refractive index and high amorphousness. Using the low-index co-deposited HTL, a 1.22-fold enhancement of the outcoupling efficiency of a phosphorescent OLED is demonstrated. The proposed method can be generally applied to OLEDs to significantly enhance their outcoupling efficiency without increasing process cost. The results show the potential of active refractive index control as a major strategy for achieving further high-efficiency OLEDs.
DOI	10.1039/D1TC02478G