教師資料查詢 | 類別: 期刊論文 | 教師: 徐秀福 Hsiu-fu Hsu (瀏覽個人網頁)

標題:Probe exciplex structure of highly efficient thermally activated delayed fluorescence organic light emitting diodes
學年107
學期1
出版(發表)日期2018/08/06
作品名稱Probe exciplex structure of highly efficient thermally activated delayed fluorescence organic light emitting diodes
作品名稱(其他語言)
著者Tzu-Chieh Lin; Monima Sarma; Yi-Ting Chen; Shih-Hung Liu; Ke-Ting Lin; Pin-Yi Chiang; Wei-Tsung Chuang; Yi-Chen Liu; Hsiu-Fu Hsu; Wen-Yi Hung; Wei-Chieh Tang; Ken-Tsung Wong; Pi-Tai Chou
單位
出版者
著錄名稱、卷期、頁數Nature Communications 9, p.3111
摘要The lack of structural information impeded the access of efficient luminescence for the exciplex type thermally activated delayed fluorescence (TADF). We report here the pump-probe Step-Scan Fourier transform infrared spectra of exciplex composed of a carbazole-based electron donor (CN-Cz2) and 1,3,5-triazine-based electron acceptor (PO-T2T) codeposited as the solid film that gives intermolecular charge transfer (CT), TADF, and record-high exciplex type cyan organic light emitting diodes (external quantum efficiency: 16%). The transient infrared spectral assignment to the CT state is unambiguous due to its distinction from the local excited state of either the donor or the acceptor chromophore. Importantly, a broad absorption band centered at ~2060 cm−1 was observed and assigned to a polaron-pair absorption. Time-resolved kinetics lead us to conclude that CT excited states relax to a ground-state intermediate with a time constant of ~3 µs, followed by a structural relaxation to the original CN-Cz2:PO-T2T configuration within ~14 µs.
關鍵字
語言英文(美國)
ISSN2041-1723
期刊性質國外
收錄於SCI;
產學合作
通訊作者Wen-Yi Hung; Ken-Tsung Wong; Pi-Tai Chou
審稿制度
國別中華民國
公開徵稿
出版型式,電子版
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