Can an organic phosphorescent dye act as a charge transporter?
Choi, WH; Cheung, CH; So, SK
| HERO ID | 3576222 |
|---|---|
| In Press | No |
| Year | 2010 |
| Title | Can an organic phosphorescent dye act as a charge transporter? |
| Authors | Choi, WH; Cheung, CH; So, SK |
| Journal | Organic Electronics |
| Volume | 11 |
| Issue | 5 |
| Page Numbers | 872-875 |
| Abstract | The hole transport property of a widely used phosphorescent dye, tris(2-phenylpyridine) iridium or Ir(ppy)(3) was investigated by thin film transistor (TFT) technique. The field effect (FE) mobility of Ir(ppy)(3) was found to be 1.7 x 10 (5) cm(2) V (1)s (1). This value is actually comparable to NPB and CBP, two popular hole transporting materials for fluorescent and phosphorescent organic light-emitting diodes (FOLED and POLED), respectively. In addition, temperature dependent measurements were carried out to study the energetic disorder (sigma) of Ir(ppy)(3). The extracted sigma similar to 88 meV is comparable to those of other common amorphous organic hole transporters, which are in the range of 80-90 meV. Our findings indicate that the dye can directly act as a hole transporting component in POLEDs. Crown Copyright (C) 2010 Published by Elsevier B. V. All rights reserved. |
| Doi | 10.1016/j.orgel.2010.02.001 |
| Wosid | WOS:000276638100022 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | Organic light-emitting diodes; Phosphorescent dye; Thin film transistor; Charge transport |