Evaluation of Nanostructured NiS 2 Thin Films from a Single-Source Precursor for Flexible Memristive Devices.

Autor: Desai TR; Department of Chemistry, Ecole Centrale School of Engineering, Mahindra University, Hyderabad 500043, India., Goud RSP; Centre for Advanced Studies in Electronic Sciences and Technology, University of Hyderabad, Hyderabad 500046, India., Dongale TD; Computational Electronics and Nanoscience Research Laboratory, School of Nanoscience and Biotechnology, Shivaji University, Kolhapur 416004, India., Gurnani C; Department of Chemistry, Ecole Centrale School of Engineering, Mahindra University, Hyderabad 500043, India.
Jazyk: angličtina
Zdroj: ACS omega [ACS Omega] 2023 Nov 21; Vol. 8 (51), pp. 48873-48883. Date of Electronic Publication: 2023 Nov 21 (Print Publication: 2023).
DOI: 10.1021/acsomega.3c06331
Abstrakt: Herein, we report the first demonstration of a single-step, in situ growth of NiS 2 nanostructures from a single-source precursor onto a flexible substrate as a versatile platform for an effective nonvolatile memristor. The low temperature, solution-processed deposition of NiS 2 thin films exhibits a wide band gap range, spherical-flower-like morphology with high surface area and porosity, and negligible surface roughness. Moreover, the fabricated Au/NiS 2 /ITO/PET memristor device reveals reproducible bipolar resistive switching (RS) at low operational voltages under both flat and bending conditions. The flexible device shows stable RS behavior for multiple cycles with a good memory window (∼10 2 ) and data retention of up to 10 4 s. The switching of a device between a high-resistance state and a low-resistance state is attributed to the filamentary conduction based on sulfur ion migration and sulfur vacancies and plays a key role in the outstanding memristive performance of the device. Consequently, this work provides a simple, scalable, solution-processed route to fabricate a flexible device with potential applications in next-generation neuromorphic computing and wearable electronics.
Competing Interests: The authors declare no competing financial interest.
(© 2023 The Authors. Published by American Chemical Society.)
Databáze: MEDLINE
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