日本画像学会誌
Online ISSN : 1880-4675
Print ISSN : 1344-4425
論文
Photoluminescence in a Thermally Activated Delayed Fluorescence Emitter for Organic Light-emitting Diodes
Akitsugu NIWAKensho TAKAKITakashi KOBAYASHITakashi NAGASEKenichi GOUSHIChihaya ADACHIHiroyoshi NAITO
著者情報
ジャーナル 認証あり

55 巻 (2016) 2 号 p. 143-148

詳細
PDFをダウンロード (540K) 発行機関連絡先
抄録

Thermally activated delayed fluorescence (TADF) has attracted much attention for realization of highly-efficient and low-cost organic light emitting diodes (OLEDs). OLEDs based on 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN), which is one of highly-efficient TADF emitters, have been demonstrated to exhibit external quantum efficiency more than 19%. To study the decay rates from excited states of 4CzIPN, the temperature dependence of photoluminescence quantum efficiency (PLQE) has been measured in the weak photoexcitation limit in 4CzIPN-doped 1,3-bis(9-carbazolyl)benzene thin films. Characteristic features of the temperature dependence of PLQE in the weak photoexcitation limit are found, and examined by using rate equations of singlet and triplet densities.

著者関連情報
© 2016 by The Imaging Society of Japan
前の記事 次の記事

閲覧履歴
feedback
Top