期刊
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
卷 214, 期 3, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssa.201600595
关键词
bi-layer; chemical displacement technique (CDT); data retention; electrochemical metallization (ECM); endurance
资金
- National Science Council of Taiwan [NSC 102-2221-E-035-065-MY3]
- Ministry of Science and Technology, R.O.C. [MOST 105-2221-E-035-075-MY3]
Nanoscale-crossbar electrochemical-metallization (ECM) type resistive-switching random access memory (ReRAM) is considered promising candidates for next-generation non-volatile memory. However, performing nanoscale patterning with traditional Cu-based ECM ReRAM is quite challenging, because Cu is difficult to control and pattern using lithography and etching. In this study, a nanoscale Cu-based ReRAM with a Si3N4-SiO2 bi-layer was fabricated successfully through a novel Cu chemical displacement technique (Cu-CDT). Compared with other conventional Cu deposition techniques, the Cu-CDT exhibits numerous advantages including simplicity, low-temperature fabrication, low cost, and high displacement selectivity between poly-Si and the Si3N4-SiO2 bi-layer. Moreover, the developed nanoscale-crossbar Cu-CDT ReRAM device demonstrated stable switching and remarkable high-temperature data retention. Therefore, the Cu-CDT is an effective approach for overcoming Cu etching and patterning limitations.
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