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Atomic origin of the traps in memristive interface

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Abstract

In recent years, trap-related interfacial transport phenomena have received great attention owing to their potential applications in resistive switching devices and photo detectors. Not long ago, one new type of memristive interface that is composed of F-doped SnO2 and Bi2S3 nano-network layers has demonstrated a bivariate-continuous-tunable resistance with a swift response comparable to the one in neuron synapses and with a brain-like memorizing capability. However, the resistive mechanism is still not clearly understood because of lack of evidence, and the limited improvement in the development of the interfacial device. By combining I–V characterization, electron energy-loss spectroscopy, and first-principle calculation, we studied in detail the macro/micro features of the memristive interface using experimental and theoretical methods, and confirmed that its atomic origin is attributed to the traps induced by O-doping. This implies that impurity-doping might be an effective strategy for improving switching features and building new interfacial memristors.

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Acknowledgements

This research was supported by the National Key Research Program of China (No. 2016YFA0200403), National Natural Science Foundation of China (Nos. 10974037 and 11547163), the CAS Strategy Pilot program (No. XAD 09020300), Hunan Provincial Natural Science Foundation of China (No. 2015JJ6015) and Science and technology project of Yiyang (No. 2015JZ29). Y. T. thanks for the fellowship from the China Scholarship Council (CSC, No. 201508430266).

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Authors and Affiliations

  1. CAS Center of Excellence for Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, No. 11 Beiyitiao, Zhongguancun, Beijing, 100190, China

    Ye Tian & Qian Liu

  2. School of Communication and Electronics Engineering, Hunan City University, Yiyang, 413000, China

    Ye Tian

  3. Department of Physics and Astronomy, Vanderbilt University, Nashville, TN, 37235, USA

    Lida Pan

  4. Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China

    Lida Pan

  5. Photonics Research Group, Department of Information Technology, Ghent University-IMEC, Ghent, B-9000, Belgium

    Ye Tian

  6. Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen, 518055, China

    Chuan Fei Guo

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  1. Ye Tian
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  2. Lida Pan
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  3. Chuan Fei Guo
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  4. Qian Liu
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Correspondence to Qian Liu.

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Tian, Y., Pan, L., Guo, C.F. et al. Atomic origin of the traps in memristive interface. Nano Res. 10, 1924–1931 (2017). https://doi.org/10.1007/s12274-016-1376-3

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  • DOI: https://doi.org/10.1007/s12274-016-1376-3

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