The main idea behind this work was demonstrated in a form of a new thermoelectrochromic sensor on a flexible substrate using\ngraphene as an electrically reconfigurable thermal medium (TEChrom). Our approach relies on electromodulation of thermal\nproperties of graphene on poly(ethylene terephthalate) (PET) via mechanical destruction of a graphene layer. Graphene applied\nin this work was obtained by chemical vapor deposition (CVD) technique on copper substrate and characterized by Raman and\nscanning tunneling spectroscopy. Electrical parameters of graphene were evaluated by the van der Pauw method on the transferred\ngraphene layers onto SiO2 substrates by electrochemical delamination method. Two configurations of architecture of sensors,\nwithout and with the thermochromic layer, were investigated, taking into account the increase of voltage from 0 to 50V and were\nobserved by thermographic camera to define heat energy. Current-voltage characteristics obtained for the sensor with damaged\ngraphene layer are linear, and the resistivity is independent from the current applied. The device investigated under 1000W/m2\nexhibited rise of resistivity along with increased temperature. Flexible thermoelectrochromic device with graphene presented here\ncan be widely used as a sensor for both the military and civil monitoring.
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