A poly(3,4-alkylenedioxythiophene) electrochromic variable optical attenuator with near-infrared reflectivity tuned independently of the visible region
| dc.contributor.author | Aubrey L Dyer | |
| dc.contributor.author | Christophe Grenier | |
| dc.contributor.author | John Reynolds | |
| dc.date.accessioned | 2024-05-08T19:07:41Z | |
| dc.date.available | 2024-05-08T19:07:41Z | |
| dc.description.abstract | Disubstituted poly(3,4-propylenedioxythiophene)s (PProDOTs) exhibit large electrochromic contrasts in the near infrared (NIR) while showing essentially no color change in the visible region when incorporated into a reflective device platform. The source of this is attributed to a conductive front that propagates through the insulating polymer film, extending from the polymer/electrode interface to the top of the polymer film. A utility of the large contrasts seen in the NIR region is demonstrated with application of the device as an electrochromic variable optical attenuator modulating fiber-optic signals for optical telecommunications. With bis(ethylhexyloxy)-substituted PProDOT as the active electrochromic polymer in the device, an optical attenuation of 11 dB at the telecommunications wavelengths of 1.31 and 1.55 μm is achieved with only a 0.1–0.2 dB optical loss in the bleached state. Other favorable properties include optical memory in the absorbing state, switching speeds of under 1 s, a low operating voltage of ±1.2 V, and an improved processability that allows spray-casting from organic solvents. | |
| dc.identifier.uri | https://hdl.handle.net/20.500.12951/485 | |
| dc.title | A poly(3,4-alkylenedioxythiophene) electrochromic variable optical attenuator with near-infrared reflectivity tuned independently of the visible region | |
| dc.type | Journal Article, Professional Journal | |
| dcterms.bibliographicCitation | Advanced Functional Materials 17, 1480, (April 2007) |