Stavros Kozakos, Nikolaos Vouroutzis, Christos B. Lioutas, Tyler J. Slade, Nikolaos Frangis* and Mercouri G. Kanatzidis*,
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引用次数: 0
Abstract
We present findings from an electron diffraction and high-resolution transmission electron microscopy (HRTEM) study of composites mPbS + NaSbS2 (m = 10, 18). The study reveals that these materials exhibit a nanostructured nature. The dominant observed structure corresponds to the NaCl type, characterized by numerous inhomogeneities. Interestingly, nanocrystals with a cubic structure, but possessing distinct lattice parameters (i.e., different compositions) compared to their surroundings, were observed. Additionally, some nanocrystals exhibited an orthorhombic structure distortion and some nanocrystals with a modulated structure resulting from long-range ordering effects were observed. All types of nanocrystals were observed to grow endotaxially within the matrix. Evidence was also found, suggesting a remarkable phenomenon where, in some areas, S atoms migrate from octahedral to tetrahedral sites, thereby validating previous predictions. These findings significantly contribute to our understanding of these semiconductors and motivate future studies of the thermoelectric properties in PbS-NaSbS2 materials.
期刊介绍:
The journal Chemistry of Materials focuses on publishing original research at the intersection of materials science and chemistry. The studies published in the journal involve chemistry as a prominent component and explore topics such as the design, synthesis, characterization, processing, understanding, and application of functional or potentially functional materials. The journal covers various areas of interest, including inorganic and organic solid-state chemistry, nanomaterials, biomaterials, thin films and polymers, and composite/hybrid materials. The journal particularly seeks papers that highlight the creation or development of innovative materials with novel optical, electrical, magnetic, catalytic, or mechanical properties. It is essential that manuscripts on these topics have a primary focus on the chemistry of materials and represent a significant advancement compared to prior research. Before external reviews are sought, submitted manuscripts undergo a review process by a minimum of two editors to ensure their appropriateness for the journal and the presence of sufficient evidence of a significant advance that will be of broad interest to the materials chemistry community.