Dataset Information

Roll-to-roll sputtered and patterned Cu_2-x O/Cu/Cu_2-x O multilayer grid electrode for flexible smart windows.

ABSTRACT: We fabricated cost-effective Cu_2-x O/Cu/Cu_2-x O 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 Cu_2-x O/Cu/Cu_2-x O multilayer grid, the electrical and optical properties of the Cu_2-x O/Cu/Cu_2-x O 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 Cu_2-x O/Cu/Cu_2-x O 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 Cu_2-x O/Cu/Cu_2-x O multilayer grid electrode was compared to those of brittle ITO electrodes to demonstrate its outstanding flexibility. To show the potential of the Cu_2-x O/Cu/Cu_2-x O 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 Cu_2-x O/Cu/Cu_2-x O grid-based TFH and the fast on-off performance of the Cu_2-x O/Cu/Cu_2-x O grid-based EC device indicates that the RTR-processed Cu_2-x O/Cu/Cu_2-x O multilayer grid is promising as a low-cost and large-area flexible transparent electrode for high-performance smart windows.

SUBMITTER: Seo HJ

PROVIDER: S-EPMC9083334 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature

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Roll-to-roll sputtered and patterned Cu2-x O/Cu/Cu2-x O multilayer grid electrode for flexible smart windows.

Seo Hyeong-Jin HJ Nah Yoon-Chae YC Kim Han-Ki HK

RSC advances 20180730 47

We fabricated cost-effective Cu2-x O/Cu/Cu2-x O 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-x O/Cu/Cu2-x O multilayer grid, the electrical and optical properties of the Cu2-x O/Cu/Cu2-x O multilayer grid electrodes were investigated as a functi ...[more]

PMID: 35541081

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Project description:As the essential component of a quantum dot-sensitized solar cell (QDSC), the counter electrode (CE) plays an important role in electron transfer and catalytic reduction acquisition throughout the device. A novel route to design multilayer functionalized Cu2S thin films as CEs with high catalytic activity and enhanced stability, as well as large specific surface area and high conductivity, is presented. Firstly, Mo-based films were prepared by magnetron sputtering on a glass substrate, and then porous CuZnMo conductive films were formed by etching with hydrochloric acid. Secondly, indium tin oxide (ITO) film was sputtered onto the porous structure to act as a protective layer, and a porous ITO/CuZnMo structured film was obtained after optimization. In the third step, multilayer Cu(x)/ITO/CuZnMo structured films were acquired by sputtering Cu films. Finally, multilayer Cu2S(t)/ITO/CuZnMo functionalized film CEs were obtained via in situ sulfidation of sputtered Cu films. The functions of conduction and resistance to electrolyte corrosion were produced and enhanced by annealing an ITO layer at high temperature prior to Cu deposition, while catalytic activity enabled by Cu2S was realized from Cu film sulfidation. The multilayer Cu2S/ITO(500 °C)/CuZnMo functionalized films exhibit high catalytic activity and enhanced stability for resistance to electrolyte corrosion. Taking multilayer Cu2S/ITO(500 °C)/CuZnMo films as CEs, the QDSCs demonstrated good stability of power conversion efficiency (PCE) after 500 h of irradiation, from an initial 4.21% to a final 4.00%. Furthermore, the thickness of Cu2S film modulated by the duration of Cu sputtering was investigated. It was found that the QDSCs using multilayer Cu2S(40 min)/ITO/CuZnMo functionalized film with a Cu2S thickness of 1.2 μm as CE exhibit the best performance, and the R ct value was 0.57 Ω. The best photovoltaic performance with a PCE of 5.21% (V oc = 533.1 mV, J sc = 18.80 mA cm-2, FF = 52.84%) was achieved under AM 1.5 radiation with an incident power of 100 mW cm-2. This design of a multilayer functionalized CE introduces potential alternatives to the common brass-based CE for long-term QDSCs with high performance.

Dataset Information

Roll-to-roll sputtered and patterned Cu_2-x O/Cu/Cu_2-x O multilayer grid electrode for flexible smart windows.

Publications

Roll-to-roll sputtered and patterned Cu<sub>2-<i>x</i></sub> O/Cu/Cu<sub>2-<i>x</i></sub> O multilayer grid electrode for flexible smart windows.

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