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Carbazole–oxadiazole containing polyurethanes as phosphorescent host for organic light emitting diodes
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ku, Cheng-Hsiu Kuo, Chao-Hui Leung, Man-Kit Hsieh, Kuo-Huang |
| Copyright Year | 2009 |
| Abstract | Abstract New types of polyurethanes (PUs) were prepared from condensation polymerization of isophorone diisocyanate (IPDI) with various combination of 9-butyl-3,6-bis(4-hydroxyphenyl)carbazole (Cz) and 2,5-bis(4-hydroxyphenyl)-1,3,4-oxadiazole (OXD), and end-capped with 4- tert- butyl phenol. The Cz-OXD PUs can also be used as host for phosphorescent dye. Red EL emission was obtained when Ir(btp) 2 (acac) or Ir(2-phq) 2 (acac) was used as the phosphorescent dyes in Cz-OXD (3:1) PU. Maximum brightness of 394 cd/m 2 and EL efficiency of 1 cd/A were achieved for the Ir(2-phq) 2 (acac) base device. In addition, white light PLED was demonstrated when co-dopant of Ir(btp) 2 (acac) and Firpic were used. |
| Starting Page | 1545 |
| Ending Page | 1553 |
| Page Count | 9 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.eurpolymj.2009.01.024 |
| Alternate Webpage(s) | http://ntur.lib.ntu.edu.tw//bitstream/246246/164512/1/40.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/j.eurpolymj.2009.01.024 |
| Volume Number | 45 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
