• 文献标题:   CVD-Graphene-Based Flexible, Thermoelectrochromic Sensor
  • 文献类型:   Article
  • 作  者:   JANUSZKO A, IWAN A, MALECZEK S, PRZYBYL W, PASTERNAK I, KRAJEWSKA A, STRUPINSKI W
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF NANOMATERIALS
  • ISSN:   1687-4110 EI 1687-4129
  • 通讯作者地址:   Mil Inst Engn Technol
  • 被引频次:   0
  • DOI:   10.1155/2017/2757590
  • 出版年:   2017

▎ 摘  要

The main idea behind this work was demonstrated in a form of a new thermoelectrochromic sensor on a flexible substrate using graphene as an electrically reconfigurable thermal medium (TEChrom (TM)). Our approach relies on electromodulation of thermal properties of graphene on poly(ethylene terephthalate) (PET) via mechanical destruction of a graphene layer. Graphene applied in this work was obtained by chemical vapor deposition (CVD) technique on copper substrate and characterized by Raman and scanning tunneling spectroscopy. Electrical parameters of graphene were evaluated by the van der Pauw method on the transferred graphene layers onto SiO2 substrates by electrochemical delamination method. Two configurations of architecture of sensors, without and with the thermochromic layer, were investigated, taking into account the increase of voltage from 0 to 50V and were observed by thermographic camera to define heat energy. Current-voltage characteristics obtained for the sensor with damaged graphene layer are linear, and the resistivity is independent from the current applied. The device investigated under 1000 W/m(2) exhibited rise of resistivity along with increased temperature. Flexible thermoelectrochromic device with graphene presented here can be widely used as a sensor for both the military and civil monitoring.