Electrical Bistable Properties of P-25 TiO2 Nanoparticles Composited with PVP for Memory Devices

  • P. Ukakimaparn
  • D. Chantarawong
  • P. Songkeaw
  • K. OnlaorEmail author
  • T. Thiwawong
  • B. Tunhoo


In this work, P-25 titanium dioxide nanoparticles (TiO2 NPs) were composited with poly-vinylpyrrolidone (PVP) at various concentrations of TiO2 NPs. The bistable memory devices were fabricated by spin coating from a prepared PVP:TiO2 NPs solution on indium tin oxide (ITO) electrodes with the device structure of ITO/PVP:TiO2 NPs/Al. The maximum ON/OFF current ratio of the bistable memory devices was approximately 105 at a reading voltage of +1 V. The mechanism of the memory device can be expressed by theoretical fitting between the experimental results and conduction models. Moreover, a retention time test for continuous read operations of the device is presented.


Titanium dioxide nanoparticles bistable device memory 


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This work was financially supported by King Mongkut’s Institute of Technology Ladkrabang (KMITL, Grant No. A118-0260-079).

Supplementary material

11664_2019_7503_MOESM1_ESM.pdf (463 kb)
Supplementary material 1 (PDF 462 kb)


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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • P. Ukakimaparn
    • 1
  • D. Chantarawong
    • 1
  • P. Songkeaw
    • 1
  • K. Onlaor
    • 1
    • 2
    Email author
  • T. Thiwawong
    • 1
    • 2
  • B. Tunhoo
    • 1
    • 2
  1. 1.Electronics and Control System for Nanodevice Research Laboratory, College of NanotechnologyKing Mongkut’s Institute of Technology LadkrabangBangkokThailand
  2. 2.Thailand Center of Excellence in Physics, Commission on Higher Education, Ministry of EducationBangkokThailand

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