Luminescent Electrochromic Device Based on a Biohybrid Electrolyte Doped With a Mixture of Potassium Triflate and a Europium beta-diketonate Complex
| authors | Fernandes, M; Botas, AMP; Leones, R; Pereira, S; Silva, MM; Ferreira, RAS; Carlos, LD; Fortunato, E; Rego, R; Bermudez, VD |
| editors | Mascher, P; Lockwood, DJ |
| nationality | International |
| journal | NANOSCALE LUMINESCENT MATERIALS 3 |
| keywords | POLY(EPSILON-CAPROLACTONE)/SILOXANE; ENERGY |
| abstract | An amorphous poly(epsilon-caprolactone) (PCL(530))/siloxane hybrid doped with potassium triflate (KCF3SO3) and Eu(btfac)(3)phen (where btfac(-) is 4,4,4-trifluoro-1-phenyl-2,4-butanedionate and phen is 1,10-phenantroline) was synthesized by the sol-gel method. This hybrid exhibits a maximum and constant absolute emission quantum yield value of 0.26 +/- 0.03 under excitation within 330-360 nm. The performance of a prototype ECD based on a glass/ITO/WO3/electrolyte/NiO/ITO/glass incorporating this material is very encouraging. The device exhibited switching time around 50 s, an optical density change of 0.06, and a coloration efficiency of 23 cm(2)C(-1) in the 2nd cycle. This work demonstrates that the combined use of an ionic salt and a lanthanide complex as active species of an ECD's electrolyte offers attractive new prospects for the fabrication of light emitting electrochromic windows. |
| publisher | ELECTROCHEMICAL SOC INC |
| issn | 1938-5862 |
| isbn | 978-1-60768-520-3 |
| year published | 2014 |
| volume | 61 |
| issue | 5 |
| beginning page | 213 |
| ending page | 225 |
| digital object identifier (doi) | 10.1149/06105.0213ecst |
| web of science category | Electrochemistry; Nanoscience & Nanotechnology |
| subject category | Electrochemistry; Science & Technology - Other Topics |
| unique article identifier | WOS:000338927300023 |
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