An electroforming-free mechanism for Cu2O solid-electrolyte-based conductive-bridge random access memory (CBRAM)
- Authors
- Kwon, Ki-Hyun; Kim, Dong-Won; Kim, Hea-Jee; Jin, Soo-Min; Woo, Dae-Seong; Park, Sang-Hong; Park, Jea Gun
- Issue Date
- Jun-2020
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY C, v.8, no.24, pp.8125 - 8134
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MATERIALS CHEMISTRY C
- Volume
- 8
- Number
- 24
- Start Page
- 8125
- End Page
- 8134
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2838
- DOI
- 10.1039/d0tc01325k
- ISSN
- 2050-7526
- Abstract
- In a CuxO solid-electrolyte-based CBRAM cell using an Ag top electrode, electroforming-free and electro-reset processes could be achieved at a specificex situannealing temperature of the solid electrolyte (i.e., 250 degrees C, cubic crystalline); however, below 200 degrees C (i.e., cubic crystalline), no electro-reset process was found and above 300 degrees C (i.e., monoclinic crystalline), an electroforming process was necessary. Theex situannealing temperature of the CuxO solid electrolyte determined the remaining metal (i.e., Cu2+) vacancy concentration of the CuxO solid electrolyte,i.e., a higher annealing temperature led to a lower remaining Cu(2+)vacancy concentration. As a result, a shallower diffusion depth of metal (i.e., Ag) atoms in the CuxO solid electrolyte could be obtained at a higherex situannealing temperature. Since the diffusion depth of Ag atoms decides the shape of the metal (i.e., Ag)-atom filament, the presence of an electroforming or electro-reset process was determined by the precise shape of the Ag-atom filament in the CuxO solid electrolyte,i.e., a shallower diffusion depth of the Ag atoms led to a more inversely conical shape of the Ag-atom filament. The detailed shapes of the Ag-atom filament were simulated by using the diffusion depth profile of metal atoms and the finite element method; in this simulation, a shallower diffusion depth of the Ag atoms led to a more inversely conical shape of the Ag-atom filament. In addition, the shape of the Ag-atom filament was well correlated with the presence of an electroforming or electro-reset process, that is, both electroforming and electro-reset processes were achieved at a moderately inversely conical shape of the metal-atom filament.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 융합전자공학부 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2838)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.