Application of triphenylamine dendritic polymer in a complementary electrochromic device with panchromatic absorption
| Autor: | Chih-Wei Hu, Man-kit Leung, Kuo-Chuan Ho, Sheng-Yuan Kao, You-Shiang Lin |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
chemistry.chemical_classification
Conductive polymer Materials science Renewable Energy Sustainability and the Environment Analytical chemistry Polymer Photochemistry Triphenylamine Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry PEDOT:PSS Electrochromism Transmittance Thin film Absorption (electromagnetic radiation) |
| Zdroj: | Solar Energy Materials and Solar Cells. 143:174-182 |
| ISSN: | 0927-0248 |
| DOI: | 10.1016/j.solmat.2015.04.025 |
| Popis: | Application of poly(Nʹ, Nʺ, N‴-tris[N, N-bis-(4ʹ-diphenylamino-biphenyl-4-yl)phenyl]-1, 3, 5-benzene tricarboxamide) (PG1), a triphenylamine dendritic polymer, in an complementary electrochromic device (ECD) has been studied. Electrochromic transitions of PG1 itself give very significant transmittance change (∆T) of 58.4% at 485 nm and 81.8% at 780 nm with rather good cycling stability. A complementary ECD based on the PG1 thin film and poly(3,4-ethylenedioxythiophene) (PEDOT) thin film was assembled to demonstrate panchromatic absorption characteristic through a simple fabrication process. This ECD exhibits black-to-transmissive electrochromism when switched from −0.4 to 1.5 V. Large variation in L* value in CIE L*a*b* coordinate (45.6) and ∆T (55.5% at 510 nm) is observed. In fact, the ∆T value achieved in this work is comparable to the highest value (58%) among all reported triphenylamine derivative/PEDOT ECDs after an extensive literature search. Furthermore, good cycling stability is achieved in the proposed ECD, which still retained panchromatic absorption characteristic and maintained 91.7% of the initial ∆T value at 510 nm after continuous 10,000 switchings. |
| Databáze: | OpenAIRE |
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