ICT2014 Abstracts

Here we present a low–middle thermoelectric (TE) temperature sensor with a core component of TE module. This module, which has a sandwich-like structure that consists a Cu/Sn₉₅Ag₅/coated Ni/sprayed Ni/TE/ sprayed Ni/ coated Ni/ Sn₉₅Ag₅/Cu multilayer, exhibits a low internal resistance of 5.5Ω~5.9Ω and a contact resistance of 0.51~0.91Ω. The sensor has attained an open circuit voltage of 1.50V~2.97V with a response time of less than 1.5s. The maximum output power was estimated to be 11.6mW and 428.7mW respectively when the temperature difference (ΔT) are 9.3⁰C and 52.9⁰C. According to these figures, we then get the corresponding power densities, which are ~7.25×10³ nW/mm² and 2.68×10⁵ nW/mm² respectively. Although there is still huge room to improve or optimize the performance or the structure of the sensor, the output voltages and the maximum output powers attained are large enough to drive the small electronic devices, such as fire–alarming systems and so forth. Therefore, it is believed that the fabrication technology and the designed structure of the sensor are to be applicable.