Abstract
HighlightsThe electrical transport of the metallized vein networks is mimicked from the material transport function of the leaf vein networks.The vein-like transparent conducting electrodes show ultralow sheet resistance < 0.1 Ω □−1, broadband optical transparency > 80%, and high current density transport capability > 6000 A cm−2.The metal consumption for the metallization of the leaf veins can be as low as 4 g m−2.
Highlights
Plant leaves behave like photochemical factories that convert water and C O2 into carbohydrates and oxygen by photosyn‐ thesis
The electrical sheet resistance (Rsh) versus plating time is demonstrated in Fig. 2c, where the inset shows an image of Cu-plated Magnolia liliiflora leaf veins (MLLVs) during the four-probe measurement
It is demonstrated that the vein-like transparent conductive electrodes (TCEs) have low sheet resistance, high optical transparency, high current transport capability, and resource efficiency, and some of these prop‐ erties may relevant for specific applications; for example, for solar cell applications, the high transparency, low sheet resistance, and low silver consumption may be the desired properties for mass production to increase the efficiency and reduce the cost
Summary
Plant leaves behave like photochemical factories that convert water and C O2 into carbohydrates and oxygen by photosyn‐ thesis. The leaf vein networks [6, 7] (example of a Magnolia lili‐ iflora leaf vein is shown in Fig. 1a) play an important role in the photosynthesis process, and they supply water and nutrients to the leaf cells and transport away the photosyn‐ thesized carbohydrates to other parts of the plants for their growth. They serve as a flexible backbone for the mechanical stability of the leaves [8, 9]. J of more than 6000 A cm−2 can be transported through the metallized vein-like networks
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