Highly Conductive Networks of Silver Nanosheets
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2022Access:
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Kelly, A.G. and O'Reilly, J. and Gabbett, C. and Szyd??owska, B. and O'Suilleabhain, D. and Khan, U. and Maughan, J. and Carey, T. and Sheil, S. and Stamenov, P. and Coleman, J.N., Highly Conductive Networks of Silver Nanosheets, Small, 2022Abstract:
Although printed networks of semiconducting nanosheets have found success in a range of applications, conductive nanosheet networks are limited by low conductivities (<106 S m−1). Here, dispersions of silver nanosheets (AgNS) that can be printed into highly conductive networks are described. Using a commercial thermal inkjet printer, AgNS patterns with unannealed conductivities of up to (6.0 ± 1.1) × 106 S m−1 are printed. These networks can form electromagnetic interference shields with record shielding effectiveness of >60 dB in the microwave region at thicknesses <200 nm. High resolution patterns with line widths down to 10 µm are also printed using an aerosol-jet printer which, when annealed at 200 °C, display conductivity >107 S m−1. Unlike conventional Ag-nanoparticle inks, the 2D geometry of AgNS yields smooth, short-free interfaces between electrode and active layer when used as the top electrode in vertical nanosheet heterostructures. This shows that all-printed vertical heterostructures of AgNS/WS2/AgNS, where the top electrode is a mesh grid, function as photodetectors demonstrating that such structures can be used in optoelectronic applications that usually require transparent conductors.
Sponsor
Grant Number
Science Foundation Ireland (SFI)
SFI/12/RC/2278_P2
European Union (EU)
696656
Author's Homepage:
http://people.tcd.ie/stamenphttp://people.tcd.ie/colemaj
http://people.tcd.ie/careyti
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nanosheet networks, commercial thermal inkjet printer, electromagnetic interference shieldsDOI:
http://dx.doi.org/10.1002/smll.202105996Metadata
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