279dae027775a639dca4cadb36c010ef pmc_31022893.pdf 6ef9543b0febab992dd73f221ebaa4e1711dc99e pmc_31022893.pdf 00b4a322703b009c6182b03be5f7ee51bdb441b99dd03530f646ad272f608057 pmc_31022893.pdf Title: Measuring Device and Material ZT in a Thin-Film Si-Based Thermoelectric Microgenerator Subject: Thermoelectricity (TE) is proving to be a promising way to harvest energy for small applications and to produce a new range of thermal sensors. Recently, several thermoelectric generators (TEGs) based on nanomaterials have been developed, outperforming the efficiencies of many previous bulk generators. Here, we presented the thermoelectric characterization at different temperatures (from 50 to 350 K) of the Si thin-film based on Phosphorous (n) and Boron (p) doped thermocouples that conform to a planar micro TEG. The thermocouples were defined through selective doping by ion implantation, using boron and phosphorous, on a 100 nm thin Si film. The thermal conductivity, the Seebeck coefficient, and the electrical resistivity of each Si thermocouple was experimentally determined using the in-built heater/sensor probes and the resulting values were refined with the aid of finite element modeling (FEM). The results showed a thermoelectric figure of merit for the Si thin films of zT = 0.0093, at room temperature, which was about 12% higher than the bulk Si. In addition, we tested the thermoelectric performance of the TEG by measuring its own figure of merit, yielding a result of ZT = 0.0046 at room temperature. Keywords: thermoelectric characterization; thermoelectric generator; Si thin films Author: Pablo Ferrando-Villalba, Antonio Pablo Pérez-Marín, Llibertat Abad, Gustavo Gonçalves Dalkiranis, Aitor F. 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