Carbon Nanotubes-Silicon Nanocomposites Based Resistive Temperature Sensors

摘要

This work presents the fabrication and temperature sensing properties of the carbon nanotubes-silicon(CNT-Si) nanocomposites based sensors. The multi-walled carbon nanotubes used for the fabricationof sensors have diameter in the range of 10-30, while the silicon powder (1.99 m) is obtained by the16 milling of p-Si crystal wafers containing impurity (boron) concentration of 10 cm . For the synthesisof nanocomposites the silicone adhesive (Hero Gum) and organic polymer (GMSA) are used as anbinding materials. Four different types of composites are prepared for the fabrication of sensors. Filmdeposition is carried out by using drop casting and doctor blade technology. In all the sensors entirethickness of composite film is equal to 100 m. The temperature sensitivity is found in the range of - 0.53 %/ C to -0.74 %/ C. Depending on composition, ratio of components and kind of adhesivematerials the initial resistance values of the sensors are in the range of 260 to 34 k. The simulationof experimental results is carried out by using exponential function and the simulated results are ingood agreement with the experimental results.