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      https://www.ias.ac.in/article/fulltext/pram/090/06/0075

    • Keywords

       

      Graphene; graphite; field effect transistor; mobility; transconductance; paper substrate

    • Abstract

       

      In the present era, there has been a great demand of cost-effective, biodegradable, flexible and wearable electronics which may open the gate to many applications like flexible displays, RFID tags, health monitoring devices, etc. Due to the versatile nature of plastic substrates, they have been extensively used in packaging, printing, etc. However, the fabrication of electronic devices requires specially prepared substrates with high quality surfaces, chemical compositions and solutions to the related fabrication issues along with its non-biodegradable nature. Therefore, in this report, a cost-effective, biodegradable cellulose paper as an alternative dielectric substrate material for the fabrication of flexible field effect transistor (FET) is presented. The graphite and liquid phase exfoliated graphene have been used as the material for the realisation of source, drain and channel on cellulose paper substrate for its comparative analysis.The mobility of fabricated FETs was calculated to be $\rm{83 cm^{2}/V s}$ (holes) and $\rm{33 cm^{2}/V s}$ (electrons) for graphite FET and $\rm{100 cm^{2}/V s$ (holes) and $\rm{52 cm^{2}/V s}$ (electrons) for graphene FET, respectively. The output characteristic of the device demonstrates the linear behaviour and a comprehensive increase in conductance as a function of gate voltages. The fabricated FETs may be used for strain sensing, health care monitoring devices, human motion detection, etc.

    • Author Affiliations

       

      KAPIL BHATT1 CHEENU RANI1 MONIKA VAID1 ANKIT KAPOOR1 PRAMOD KUMAR1 SANDEEP KUMAR1 SHILPI SHRIWASTAWA1 SANDEEP SHARMA1 RANDHIR SINGH1 C C TRIPATHI1

      1. University Institute of Engineering and Technology, Kurukshetra University, Kurukshetra 136 119, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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