Articles
  • Aerosol deposition of thermoelectric p-type Bi0.5Sb1.5Te3 and n-type Bi2Te2.7Se0.3 thick films
  • Min Hwan Kwaka, Seung Beom Kangb, Jeong Hun Kimc, Jaewoo Leec, Seung-Min Leec, Won-Jeong Kimd,* and Seung Eon Moonc,*
  • a Department of Electrical Engineering, Changwon Moonsung University, Changwon 51410 b Korea Institute of Carbon Convergence Technology, Jeonju 54853 c Electronics and Telecommunications Research Institute, Daejeon, 34129 d Department of Physics, Changwon National University, Changwon 51140
Abstract
A new aerosol deposition method was used to fabricate thick Bi-Te based thermoelectric films, such as p-type Bi0.5Sb1.5Te3 and n-type Bi2Te2.7Se0.3. The fabricated films exhibited dense morphologies without any large-scale porosity. Measured films thicknesses of Bi0.5Sb1.5Te3 and Bi2Te2.7Se0.3 were 276 μm and 557 μm, respectively. The thermoelectric properties of p-type Bi0.5Sb1.5Te3 and n-type Bi2Te2.7Se0.3 were measured to be 1.18 × 104S/m and 0.7 × 104 S/m of electrical conductivities, 230.1 μV/ K and -178 μV/K of Seebeck coefficients, 0.62 mW/mK2 and 0.21 mW/mK2 of power factors, respectively. It was demonstrated that the aerosol deposition is a promising thick film fabrication method for improving the thermoelectric efficiency of the thermoelectric materials.

Keywords: Thermoelectric materials, Seebeck coefficient, Electrical properties, Aerosol deposition

This Article

  • 2017; 18(10): 731-734

    Published on Oct 31, 2017

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