Complementary electrochromic devices of PANI and PEDOT using the enzymatic poly(gallic acid)
| Autor: | José M. Hernández-Alcántara, Jesús Díaz-Sánchez, Miquel Gimeno, Alberto Rosas-Aburto, Pedro Roquero, Humberto Vázquez-Torres |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Thermogravimetric analysis Materials science Renewable Energy Sustainability and the Environment Infrared spectroscopy 02 engineering and technology Polymer Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology Electrochromic devices 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound PEDOT:PSS chemistry Chemical engineering Polyaniline Gallic acid 0210 nano-technology |
| Zdroj: | Solar Energy Materials and Solar Cells. 200:109973 |
| ISSN: | 0927-0248 |
| Popis: | The semiconducting and non-toxic enzymatic polygallic acid (PGAL) produces water dispersible poly(3,4-ethylenedioxythiophene) (PEDOT-PGAL) and polyaniline (PANI-PGAL). The results indicate that PGAL is a template for the model polymers, and thereby, the complexes are processable by spray coating to produce flexible electrochromic devices (ECDs). The materials were characterized by infrared spectroscopy, thermogravimetric analysis, and conductivity measurements in pellet form. Additionally, potentiostatic and potentiodynamic techniques in combination with UV-spectroscopy assess these materials. The produced ECDs based on PEDOT-PGAL has a ΔT of up to 19% and a life span lower than 100 cycles. However, when the PEDOT-PGAL architecture is complementary with PANI-PGAL displays up to 1000 times with a ΔT of 15% and coloring efficiencies of 275 cm2/C. The color of this PGAL-based device changes from dark violet to light green which differs from the common complementary EDCs. Additionally, complementary ECD fabricated with PEDOT-PSS against PANI-PGAL enhances the coloring efficiency up to 517 cm2/C (ΔT = 26%) and cycled 1000 times. |
| Databáze: | OpenAIRE |
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