J. Semicond. > 2015, Volume 36 > Issue 7 > 073004
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SEMICONDUCTOR MATERIALS

Temperature sensor based on composite film of vanadium complex (VO2(3-fl)) and CNT

Kh. S. Karimov1, 2, M. Mahroof-Tahir3, M. Saleem4, M. Tariq Saeed Chani5 and A. Khan Niaz1

+ Author Affiliations

 Corresponding author: M. Saleem, E-mail: msaleem108@hotmail.com; drsaleem@ymail.com

DOI: 10.1088/1674-4926/36/7/073004

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Abstract: A vanadium complex (VO2(3-fl)) and CNT composite film based temperature sensor is reported in this study. Surface-type silver electrodes were deposited on the glass substrates. A thin film of VO2(3-fl) and CNT composite was coated as a temperature-sensing material on the top of the pre-patterned Ag electrodes. The temperature-sensing principle of the sensor was based on the conductivity change of the coated sensing element upon heating or cooling processes. DC and AC (100 Hz) resistances of the temperature sensor decreased quasi-linearly with increasing the temperature in the range of 25-80 ℃. The overall resistance of the sensor decreases by 1.8-2.1 and 1.9-2.0 times at DC and AC voltage, respectively. The resistance temperature coefficients of the sensor were in the range of -(0.9-1.3)% and -(1.1-1.3)% at DC and AC voltage, respectively. The properties of the sensor studied in this work, make it beneficial to be used in the instruments for environmental monitoring of temperature.

Key words: CNT, vanadium complex, film, temperature sensor, resistance



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Fig. 1.  Molecular structure of the vanadium complex VO$_{2}$(3-fl).

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Fig. 2.  Cross sectional view of the fabricated resistive type temperature sensor.

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Fig. 3.  SEM image of the VO$_{2}$(3-fl)-CNT film.

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Fig. 4.  Resistance versus temperature relationships for two Ag/VO$_{2}$(3-fl)-CNT/Ag surface-type resistive temperature sensors at DC.

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Fig. 5.  Resistance versus temperature relationships for two Ag/VO$_{2}$(3-fl)-CNT/Ag surface-type resistive temperature sensors at AC (100 Hz).

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Fig. 6.  Simulated (dashed line) and experimental (solid line) relative resistance (at AC (100 Hz)) versus temperature relationships for Ag/VO$_{2}$(3-fl)-CNT/Ag surface-type resistive temperature sensor.

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    Received: 20 December 2014 Revised: Online: Published: 01 July 2015

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      Article Navigation >  Journal of Semiconductors  > 2015  >  36(7): 073004
      Kh. S. Karimov, M. Mahroof-Tahir, M. Saleem, M. Tariq Saeed Chani, A. Khan Niaz. Temperature sensor based on composite film of vanadium complex (VO2(3-fl)) and CNT[J]. Journal of Semiconductors, 2015, 36(7): 073004. doi: 10.1088/1674-4926/36/7/073004 ****Kh. S. Karimov, M. Mahroof-Tahir, M. Saleem, M. T. S. Chani, A. K. Niaz. Temperature sensor based on composite film of vanadium complex (VO2(3-fl)) and CNT[J]. J. Semicond., 2015, 36(7): 073004. doi:  10.1088/1674-4926/36/7/073004.
      Citation:
      Kh. S. Karimov, M. Mahroof-Tahir, M. Saleem, M. Tariq Saeed Chani, A. Khan Niaz. Temperature sensor based on composite film of vanadium complex (VO2(3-fl)) and CNT[J]. Journal of Semiconductors, 2015, 36(7): 073004. doi: 10.1088/1674-4926/36/7/073004 ****
      Kh. S. Karimov, M. Mahroof-Tahir, M. Saleem, M. T. S. Chani, A. K. Niaz. Temperature sensor based on composite film of vanadium complex (VO2(3-fl)) and CNT[J]. J. Semicond., 2015, 36(7): 073004. doi:  10.1088/1674-4926/36/7/073004.
      shu

      Temperature sensor based on composite film of vanadium complex (VO2(3-fl)) and CNT

      DOI: 10.1088/1674-4926/36/7/073004
      • 1.

        GIK Institute of Engineering Sciences and Technology, Topi, District Swabi-23640, KPK, Pakistan

      • 2.

        Center for Innovative Development of Science and New Technologies, Academy of Sciences, Rudaki Ave.33, Dushanbe, 734025, Tajikistan

      • 3.

        Department of Chemistry and Earth Sciences, Qatar University, Doha-2713, Qatar

      • 4.

        Government College of Science, Wahdat Road, Lahore-54570, Pakistan

      • 5.

        Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, Jeddah 21589, Saudi Arabia

      More Information
      • Corresponding author: E-mail: msaleem108@hotmail.com; drsaleem@ymail.com
      • Received Date: 2014-12-20
      • Accepted Date: 2015-01-31
      • Published Date: 2015-01-25

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