Fig. 4: The interfacial resistivity and module performance. | Nature Communications

Fig. 4: The interfacial resistivity and module performance.

From: Electrode interface optimization advances conversion efficiency and stability of thermoelectric devices

Fig. 4

a The interfacial resistivity (R) of Nb joint and Zr joint before and after aging at 873 K. Inset shows the diagram of interfacial resistivity analysis model (BL represents the barrier layer). RIRL and RDL are the contributions from IRL and DL, respectively. RC represents the sum of contact resistivities, RC1 (SKD-DL), RC2 (DL-IRL), and RC3 (IRL-BL). b The fitting curves of the interfacial resistivity (R) of Nb joint aging at 848 K and 873 K, and the fitting curves of Zr joint, as comparison. c Open-circuit voltage (Voc) and maximum output power (Pmax) as a function of current at different operating temperatures of the as-prepared eight-pair module. d Maximum conversion efficiency (ηmax) of the eight-pair module before and after long-term service test. Literature data of SKD single-stage module are also indicated14,38,39,40,41.

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