期刊論文
| 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, 3111(8 pages) |
| 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 | en_US |
| ISSN | 2041-1723 |
| 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 | 否 |
| 國別 | TWN |
| 公開徵稿 | |
| 出版型式 | ,電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/115556 ) |