Low power stretchable active-matrix red, green, blue (RGB) electrochromic device array of poly(3-methylthiophene)/Prussian blue
| Autor: | Lianfang Sun, Jeong Sook Ha, Jin Ho Lee, Junyeong Yun, Soo Yeong Hong, Goangseup Zi, Heun Park, Geumbee Lee, Dong Sik Kim |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Stretchable electronics General Physics and Astronomy 02 engineering and technology 010402 general chemistry Electrochromic devices 01 natural sciences law.invention chemistry.chemical_compound law Dry transfer Prussian blue business.industry Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Lithium perchlorate 0104 chemical sciences Surfaces Coatings and Films Active matrix chemistry Electrochromism Electrode Optoelectronics 0210 nano-technology business |
| Zdroj: | Applied Surface Science. 471:300-308 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2018.12.032 |
| Popis: | We report the fabrication of a stretchable array of active-matrix (AM) electrochromic devices (ECDs). The ECD is made of poly(3-methylthiophene) and Prussian blue electrodes with a mixed gel electrolyte of acetonitrile, poly(methyl methacrylate), propylene carbonate, and lithium perchlorate. The ECD displays can express red, green, or blue (RGB) depending on the applied voltage and has a high stability in air. It exhibits low power consumption levels of 331 and 378 μW cm−2 (10 s duration) at −1.0 and 1.0 V, respectively, and a high coloration efficiency of 201.6 cm2 C−1 at 1.0 V. A 4 × 4 AM ECD array is integrated on a deformable Ecoflex substrate via a dry transfer method using patterned liquid metal interconnections. The display shows a mechanical stability under bending and biaxial stretching by 30%. Finite element method analysis of the strain distribution also confirms that strain is not applied to the ECDs, guaranteeing stable operation of the array under deformation. Furthermore, a stretchable 6 × 6 AM ECD array for higher resolution display also exhibits mechanical stability under 30% biaxial stretching. This work demonstrates the high potential of our stretchable ECD array in low power-consuming displays for stretchable electronics, wearable devices, and electronic skin. |
| Databáze: | OpenAIRE |
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