期刊
NANOSCALE
卷 11, 期 29, 页码 13815-13823出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9nr03465j
关键词
-
类别
资金
- Nano Material Technology Development Program through the National Research Foundation of Korea (NRF) - Ministry of science, ICT & Future Planning [NRF-2016M3A7B4910426]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2016R1A6A1A03013422, 2017R1A2B4010771]
- National Research Foundation of Korea [2017R1A2B4010771] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We synthesized two different nanostructures of rutile TiO2 (r-TiO2) thin films on a fluorine-doped tin oxide (FTO) substrate at the lowest temperature reported until now and fabricated resistive random access memory (RRAM) devices with these r-TiO2 thin films having the stacking sequence of Ag/r-TiO2/FTO. Complementary resistive switching (CRS) and bipolar resistive switching (BRS) were observed in different thicknesses of r-TiO2 based devices. Benefiting from the in situ growth of the solution processed thin films and modulating the reaction growth rates, we successfully attained two different morphologies of r-TiO2 with a nanoplateau at a controlled deposition rate and pre-defined nanochannels at a higher deposition rate. The RRAM devices with nano-plateaus of r-TiO2 showed excellent CRS as well as unprecedented simultaneous observations of BRS. These CRS and BRS characteristics were reversible and reproducible. On the other hand, the tailored pre-defined nanochannels in r-TiO2 led to forming-free BRS with a pulse endurance higher than 10(7) without any degradation in the high and low resistance states. We propose a plausible switching mechanism of these unprecedented events using various physical and electrical characterization studies of low-temperature processed r-TiO2 RRAM devices. This work suggests the importance of solution-processed thin film engineering for RRAM switching with reliable and reproducible characteristics.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据