Journal
CHEMICAL SCIENCE
Volume 5, Issue 9, Pages 3404-3408Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4sc00823e
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Funding
- AcRF [RG 16/12]
- MOE [ARC 20/12, ARC 2/13]
- CREATE program (Nanomaterials for Energy and Water Management) from NRF
- New Initiative Fund from NTU, Singapore
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Although organic multilevel resistance memories have attracted much attention for potential realization of the exponentially-increasing density of data storage, the ambiguous structure-property relationship and the unclear switching mechanism impeded further development of multilevel resistance memory devices. Therefore, it is very urgent to ingeniously design multilevel memory materials with a certain switching mechanism. In this contribution, we have employed a multi-redox (multiple barriers) polyoxometalate-based inorganic-organic hybrid polymer (whose effective carriers are electrically controllable) to realize a ternary resistance switching memory (multilevel memories). We do believe that the as-designed inorganic-organic polymer can integrate the multi-redox states of the POM and the processability of flexible polymers together. The as-fabricated multilevel memory devices exhibit rewriteable switching properties among three redox states by applying different RESET voltages, good endurance with distinct operation windows, and tong retention. Our results could provide a new strategy to design controllable multilevel resistance memories with excellent performance.
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