Overcoming Temperature-Induced Degradation of Silver Nanowire Electrodes by an Ag@SnOx Core-Shell Approach

Kalancha V, These A, Vogl L, Levchuk I, Zhou X, Barr M, Bruns M, Bachmann J, Virtanen S, Spiecker E, Osvet A, Brabec C, Forberich K (2022)


Publication Type: Journal article

Publication year: 2022

Journal

DOI: 10.1002/aelm.202100787

Abstract

Transparent electrodes consisting of silver nanowires (Ag NWs) are a solution-processed alternative to commonly used indium tin oxide electrodes. Here, Ag NW electrodes protected by a tin oxide (SnOx) are explored and unprecedented thermal stability is found. While unprotected Ag NW electrodes fail at 250 degrees C, the SnOx Ag NW electrodes remain stable for 40 h at 250 degrees C and withstand high temperatures up to 500 degrees C for short times. First, an optimized method of synthesis that provides uniform Ag NWs with high reproducibility is used. Afterward, a SnOx shell is formed in a wet chemical reaction. Fabrication of highly conductive electrodes requires thermal annealing at 300 degrees C for 5 min under ambient atmosphere. Electrodes with a sheet resistance as low as 20 ohm sq(-1) and visible transmittance of 84% are demonstrated. It is shown that a approximate to 2 nm thick SnOx shell effectively protects the Ag NWs in a temperature range between 200 and 500 degrees C, whereas unprotected Ag NWs suddenly fail at temperatures beyond 200 degrees C. It is strongly anticipated that these improvements in the stability of Ag NWs open a large field of further investigations and applications.

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APA:

Kalancha, V., These, A., Vogl, L., Levchuk, I., Zhou, X., Barr, M.,... Forberich, K. (2022). Overcoming Temperature-Induced Degradation of Silver Nanowire Electrodes by an Ag@SnOx Core-Shell Approach. Advanced Electronic Materials. https://dx.doi.org/10.1002/aelm.202100787

MLA:

Kalancha, Violetta, et al. "Overcoming Temperature-Induced Degradation of Silver Nanowire Electrodes by an Ag@SnOx Core-Shell Approach." Advanced Electronic Materials (2022).

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