Decrease of Ca3Co4O9+δ thermal conductivity by Yb-doping

TL;DR: In this article, the SiC particles were evenly distributed in the SnSe matrix, thereby leading to the formation of SiC/SnSe composite samples, and their thermoelectric properties were investigated.

TL;DR: In this article, the effect of microwave-assisted hydrothermal synthesis on the crystalline phase-formation, microstructural characteristics, and thermoelectric performance of Ca3Co4O9 was studied.

TL;DR: The origin of low thermal conductivity in niobium-containing perovskites was investigated in this paper, where the authors indicated that the origin of such low conductivities was related with cation deficiency on the A-site.

TL;DR: In this article, temperature dependence of the electrical resistivity and Seebeck coefficient was investigated using a four-probe method with temperature ranging from 300-K to 862-K. X-ray diffraction analysis (XRD) results revealed the crystalline phase of Ca3Co4O9 with low diffraction peaks of Cu2Se phases.

TL;DR: In this article, the authors measured and analyzed the transport properties of a single-crystal transition-metal oxide and found that the resistivity is highly anisotropic between in-and out-of-plane directions.

TL;DR: In this paper, the authors present an approach to the first-Principles Modeling of Novel Thermoelectric Materials, and Carlo Gatti, Carlo Bertini, Fausto Cargnoni, Carlo M. Gatti and Carlo A. Williams.

TL;DR: In this article, a structural model for the cobaltite with three different oxidation states 2+, 3+, and 4+, in agreement with x-ray appearance near-edge structure spectra at the Co K edge was found.

TL;DR: In this paper, the dimensionless figure of merit (ZT) plays a key role in the conversion efficiency from thermal to electrical energy, which has been used in power supply of aeronautic and astronautic exploring missions, now showing notable advantages to harvest the widely distributed waste heat and convert the abundant solar energy into electricity at lower cost than Si-based photovoltaic technology.