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arXiv · 2201.09666

Charge-Density-Wave Devices Printed with the Ink of Chemically Exfoliated 1T-TaS$_2$ Fillers

Saba Baraghani·Zahra Barani·Yassamin Ghafouri·Amirmahdi Mohammadzadeh·Sriharsha Sudhindra·Tina T. Salguero·Fariborz Kargar·Alexander A. Balandin
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Abstract

We report on the preparation of inks containing fillers derived from quasi-two-dimensional charge-density-wave materials, their application for inkjet printing, and the evaluation of their electronic properties in printed thin film form. The inks were prepared by liquid-phase exfoliation of CVT-grown 1T-TaS$_2$ crystals to produce fillers with nm-scale thickness and um-scale lateral dimensions. Exfoliated 1T-TaS$_2$ was dispersed in a mixture of isopropyl alcohol and ethylene glycol to allow fine-tuning of their thermo-physical properties for inkjet printing. The temperature-dependent electrical and current fluctuation measurements of printed thin films demonstrated that the charge-density-wave properties of 1T-TaS$_2$ are preserved after processing. The functionality of the printed thin-film devices can be defined by the nearly-commensurate to commensurate charge-density-wave phase transition of individual exfoliated 1T-TaS$_2$ fillers rather than by electron-hopping transport between them. These results provide pathways for the development of printed electronics with diverse functionality achieved by the incorporation of quasi-two-dimensional van der Waals quantum materials.

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Saba Baraghani, Zahra Barani, Yassamin Ghafouri, Amirmahdi Mohammadzadeh, Sriharsha Sudhindra, Tina T. Salguero, Fariborz Kargar, Alexander A. Balandin. 2022-01-15. Charge-Density-Wave Devices Printed with the Ink of Chemically Exfoliated 1T-TaS$_2$ Fillers. https://doi.org/10.1021/acsnano.2c00378

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