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Enhanced linear electro-optic response and enhanced stability of thermo-poled 'guest-host' polycarbonate thin films
| Content Provider | Scilit |
|---|---|
| Author | Karakus, Y. Bloor, D. Cross, G. H. |
| Copyright Year | 1992 |
| Description | Journal: Journal of Physics D: Applied Physics Fixed electrode poling of 20% DAN doped bisphenol-A polycarbonate at moderate poling temperature (80 degrees C) gives a linear electro-optic (EO) coefficient, $r_{33}$ of 1.12 pm $V^{-1}$ for an applied poling field, $E_{p}$, of 27 V mu $m^{-1}$. This value is found to be ten times larger than that predicted using a simple thermodynamic model. The long term stability of the EO response was found to be unexpectedly good for a guest-host system and approaches that of some side-chain-type materials. At room temperature, a decrease of only 25% was seen in the linear EO response over a period of 21 days. The enhanced response and its unexpected stability is thought to be due to guest-host interactions and particularly to hydrogen bonding. Poling is performed 70 degrees C below the glass transition temperature of the host and is assisted by a beta -relaxation process identified at 80 degrees C. |
| Related Links | http://iopscience.iop.org/article/10.1088/0022-3727/25/6/020/pdf |
| Ending Page | 1018 |
| Page Count | 5 |
| Starting Page | 1014 |
| ISSN | 00223727 |
| e-ISSN | 13616463 |
| DOI | 10.1088/0022-3727/25/6/020 |
| Journal | Journal of Physics D: Applied Physics |
| Issue Number | 6 |
| Volume Number | 25 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1992-06-14 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics D: Applied Physics Glass Transition Temperature Room Temperature Hydrogen Bond Thin Film |
| Content Type | Text |
| Resource Type | Article |
| Subject | Surfaces, Coatings and Films Acoustics and Ultrasonics Condensed Matter Physics Electronic, Optical and Magnetic Materials |
