Martin Joshua
Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.
Rev Sci Instrum. 2012 Jun;83(6):065101. doi: 10.1063/1.4723872.
The Seebeck coefficient is a physical parameter routinely measured to identify the potential thermoelectric performance of a material. However, researchers employ a variety of techniques, conditions, and probe arrangements to measure the Seebeck coefficient, resulting in conflicting materials data. To compare and evaluate these methodologies, and to identify optimal Seebeck coefficient measurement protocols, we have developed an improved experimental apparatus to measure the Seebeck coefficient under multiple conditions and probe arrangements (300 K-1200 K). This paper will describe in detail the apparatus design and instrumentation, including a discussion of its capabilities and accuracy as measured through representative diagnostics. In addition, this paper will emphasize the techniques required to effectively manage uncertainty in high temperature Seebeck coefficient measurements.
塞贝克系数是一种用于确定材料潜在热电性能的常规测量物理参数。然而，研究人员采用了各种技术、条件和探针布置来测量塞贝克系数，导致材料数据相互矛盾。为了比较和评估这些方法，并确定最佳的塞贝克系数测量方案，我们开发了一种改进的实验装置，用于在多种条件和探针布置下（300K - 1200K）测量塞贝克系数。本文将详细描述该装置的设计和仪器设备，包括通过代表性诊断对其性能和准确性的讨论。此外，本文将强调在高温塞贝克系数测量中有效管理不确定性所需的技术。
