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Self-assembled 2D finned covellite (CuS) for resistive RAM
- Source :
- Applied Physics Letters. 113:063102
- Publication Year :
- 2018
- Publisher :
- AIP Publishing, 2018.
-
Abstract
- Copper sulfides (Cu2−xS) comprises a family of sulfides which possess good electrical and photovoltaic properties due to their self-doping (p-type) nature, attributed from the copper vacancies in their structure. Recently, metal sulfide thin films have been investigated for their resistive RAM behaviour due to the reversible formation of conductive bridges between crystalline structures. In this letter, 2D self-assembled finned covellite (CuS) was prepared via RF Magnetron Sputtering. This 2D finned CuS was found to be polycrystalline via TEM, exhibiting ReRAM behaviour with resistances having two orders of magnitude differences between 0 and −0.5 V. This fin structure eliminates the need for a multi-layered device which until now is the primary method of harnessing the ReRAM behaviour in copper sulphide. It gives rise to very low voltages of −3 V and 1 V for writing and reset, respectively, with a writing time of 20 ms.
- Subjects :
- Materials science
Physics and Astronomy (miscellaneous)
business.industry
chemistry.chemical_element
02 engineering and technology
Sputter deposition
Covellite
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Copper
0104 chemical sciences
Resistive random-access memory
chemistry
Electrical resistivity and conductivity
visual_art
visual_art.visual_art_medium
Optoelectronics
Crystallite
Thin film
0210 nano-technology
business
Electrical conductor
Subjects
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 113
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........d164d033d6bfd68b62ac86aaf22534b1
- Full Text :
- https://doi.org/10.1063/1.5027129