Journal
APPLIED PHYSICS LETTERS
Volume 120, Issue 23, Pages -Publisher
AIP Publishing
DOI: 10.1063/5.0087862
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Funding
- National Natural Science Foundation of China [62101172]
- Open Foundation of State Key Laboratory of Compressor Technology [SKL-YSJ202003]
- Anhui Provincial Natural Science Foundation [2008085QE224]
- Fundamental Research Funds for the Central Universities
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Ag/tungsten disulfide (WS2)-polyvinylpyrrolidone (PVP)/Cu memristors based on monolayer WS2 nanosheets and PVP nanocomposites exhibit write-once read-many times (WORM) memory behavior with low operating voltage, high switching ratio, good endurance, and long data retention time.
Ag/tungsten disulfide (WS2)-polyvinylpyrrolidone (PVP)/Cu memristors based on monolayer WS2 nanosheets and polyvinylpyrrolidone (PVP) nanocomposites were fabricated, and the influence of PVP content on the switching behaviors was investigated. The results indicate that the WS2-PVP based memristors show write-once read-many times (WORM) memory behavior. Remarkable resistive switching results such as a low operating voltage (V-SET < 1 V), a high switching ratio (> 10(3)), good endurance (> 100 cycles), and data retention time (> 200 s) are obtained. With the increase in the PVP content, the device V-SET gradually increases, and the switching ratio first slightly increases and then remarkably decreases. The double logarithm I-V curves verify that the switching mechanism of the devices is the trap-controlled space charge limited current mechanism, which is explained with the energy band diagram. Published under an exclusive license by AIP Publishing.
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