Roll-to-roll sputtered and patterned Cu2-xO/Cu/Cu2-xO multilayer grid electrode for flexible smart windowsopen access
- Authors
- Seo H.-J.[Seo H.-J.]; Nah Y.-C.[Nah Y.-C.]; Kim H.-K.[Kim H.-K.]
- Issue Date
- 2018
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- RSC Advances, v.8, no.47, pp.26968 - 26977
- Journal Title
- RSC Advances
- Volume
- 8
- Number
- 47
- Start Page
- 26968
- End Page
- 26977
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/24004
- DOI
- 10.1039/c8ra03252a
- ISSN
- 2046-2069
- Abstract
- We fabricated cost-effective Cu2-xO/Cu/Cu2-xO multilayer grid electrodes using roll-to-roll (RTR) sputtering and patterning processes for use as transparent and flexible electrodes in flexible smart windows. To optimize the patterned Cu2-xO/Cu/Cu2-xO multilayer grid, the electrical and optical properties of the Cu2-xO/Cu/Cu2-xO multilayer grid electrodes were investigated as a function of grid width and pitch, which directly influence the filling factor of the grid. At the optimized grid width of 16 and pitch of 600 μm, the Cu2-xO/Cu/Cu2-xO multilayer grid had a sheet resistance of 7.17 Ohm per square and an optical transmittance of 87.6%. In addition, the mechanical properties of the optimized Cu2-xO/Cu/Cu2-xO multilayer grid electrode was compared to those of brittle ITO electrodes to demonstrate its outstanding flexibility. To show the potential of the Cu2-xO/Cu/Cu2-xO multilayer grid for smart windows, we fabricated a flexible and transparent thin film heater (TFH) and a flexible electrochromic (EC) device, which are key components of smart windows. The low saturation voltage of the Cu2-xO/Cu/Cu2-xO grid-based TFH and the fast on-off performance of the Cu2-xO/Cu/Cu2-xO grid-based EC device indicates that the RTR-processed Cu2-xO/Cu/Cu2-xO multilayer grid is promising as a low-cost and large-area flexible transparent electrode for high-performance smart windows. © The Royal Society of Chemistry.
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Collections - Engineering > School of Advanced Materials Science and Engineering > 1. Journal Articles
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