ja305354y_si_001.pdf (2.62 MB)
Multilevel Conductance Switching of Memory Device through Photoelectric Effect
journal contribution
posted on 2012-12-12, 00:00 authored by Changqing Ye, Qian Peng, Mingzhu Li, Jia Luo, Zhengming Tang, Jian Pei, Jianming Chen, Zhigang Shuai, Lei Jiang, Yanlin SongA photoelectronic switch of a multilevel memory device
has been
achieved using a meta-conjugated donor-bridge-acceptor (DBA) molecule.
Such a DBA optoelectronic molecule responds to both the optical and
electrical stimuli. The device exhibits good electrical bistable switching
behaviors under dark, with a large ON/OFF ratio more than 106. In cooperation with the UV light, photoelectronic ternary states
are addressable in a bistable switching system. On the basis of the
CV measurement, charge carriers transport modeling, quantum chemical
calculation, and absorption spectra analysis, the mechanism of the
DBA memory is suggested to be attributed to the substep charge transfer
transition process. The capability of tailoring photoelectrical properties
is a very promising strategy to explore the multilevel storage, and
it will give a new opportunity for designing multifunctional devices.
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CV measurementcharge carriers transport modelingMemory Deviceabsorption spectra analysisternary statesmemory deviceDBA memorysubstep charge transfer transition processquantum chemical calculationUV lightbistablePhotoelectric EffectAdevice exhibitsMultilevel Conductance SwitchingDBA optoelectronic moleculemultifunctional devicesphotoelectrical properties
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