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Thermoelectric Materials Discovery Using Combinatorial Chemistry

机译：组合化学发现热电材料

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Transparent conducting oxides have been previously investigated for both bulk and thin film thermoelectric applications, and have shown promising results due to their thermal stability and electrical conductivity. Alloys of two or more transparent conducting oxides have been deposited using pulsed laser deposition (PLD) and combinatorial sputtering, and the resulting films were optimized for optical applications. In this study, thermoelectric materials were prepared by co-sputtering techniques, whereby a chemical gradient was formed across an alumina substrate that was patterned using photolithography to form hundreds of micro-thermocouples. The systems indium tin oxide (ITO), indium zinc oxide (1ZO), and zinc tin oxide (ZTO) were investigated for this purpose and the resulting combinatorial libraries were rapidly screened to establish room temperature resistivity, Seebeck coefficient, and power factor as functions of both composition and heat treatment, in nitrogen and air ambients. Due to their chemical stability, oxidation resistance, and large Seebeck coefficients relative to metal thermocouples, these materials are ideal for temperature measurement or energy harvesting in harsh environments such as gas turbine engines.
机译：透明导电氧化物先前已在块状和薄膜热电应用中进行了研究，并由于其热稳定性和导电性而显示出令人鼓舞的结果。已经使用脉冲激光沉积（PLD）和组合溅射法沉积了两种或多种透明导电氧化物的合金，并且针对光学应用对所得膜进行了优化。在这项研究中，通过共溅射技术制备热电材料，从而在氧化铝基板上形成化学梯度，并使用光刻将其图案化以形成数百个微热电偶。为此，研究了氧化铟锡（ITO），氧化铟锌（1ZO）和氧化锌锡（ZTO）系统，并快速筛选了所得组合库，以建立室温电阻率，塞贝克系数和功率因数函数在氮气和空气环境中的成分和热处理由于其化学稳定性，抗氧化性以及相对于金属热电偶的大塞贝克系数，这些材料非常适合在恶劣环境（例如燃气轮机）中进行温度测量或能量收集。

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  • 来源
  • 会议地点 Boston MA(US);Boston MA(US)
  • 作者

    Matin Amani; Ian Tougas; Otto J. Gregory;

  • 作者单位

    University of Rhode Island, Department of Chemical Engineering, 15 Greenhouse Rd, Kingston, RI 02881, U.S.A.;

    University of Rhode Island, Department of Chemical Engineering, 15 Greenhouse Rd, Kingston, RI 02881, U.S.A.;

    University of Rhode Island, Department of Chemical Engineering, 15 Greenhouse Rd, Kingston, RI 02881, U.S.A.;

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  • 正文语种 eng
  • 中图分类 材料;
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