AI Article Synopsis
- - The study focuses on creating flexible transparent conducting electrodes (TCEs) essential for optoelectronic devices, using innovative leaf vein-like hierarchical metal grids (HMG) for improved performance.
- - These grids feature a unique combination of mesoscale "trunk" and microscale "branches," ensuring uniform electron transport and allowing for high optical transmittance (~81%) and low resistance (1.36 Ω sq).
- - The research also demonstrates the application of these HMG electrodes in flexible electrochromic devices (ECDs), showcasing excellent cyclic performance and highlighting their potential for future wearable technology.
Article Abstract
As essential components of numerous flexible and wearable optoelectronic devices, the flexible transparent conducting electrodes (TCEs) with sufficient optical transmittance and electric conductivity become more and more important. In this work, we fabricated a large-area flexible TCE based on leaf vein-like hierarchical metal grids (HMG) comprising of mesoscale "trunk" and microscale "branches". The self-formed branched grids made the conducting paths distributing uniformly while the laser-etching trunk grids enabled to transport the collected electrons across long-distance. The Ag HMG exhibited high optical transmittance (~81%) with low sheet resistance (1.36 Ω sq), which could be simply optimized through adjusting the grids' widths, spaces, and the sizes of the TiO colloidal crackle patterns. In addition, on the basis of such advanced HMG electrode, flexible electrochromic devices (ECDs) with remarkable cyclic performance were fabricated. The HMG with high transparency, conductivity, and flexibility provides a promising TCE for the next-generation flexible and wearable optoelectronic devices.
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| http://dx.doi.org/10.1016/j.scib.2019.11.028 | DOI Listing |
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