Off-stoichiometric semiconductors Cu1.33+xZn1.33-xIn1.33Se4 (x = 0, 0.1, 0.2 and 0.3): Synthesis, structure, and thermal and electrical properties

Synthesis, Crystal Structure, and Physical Properties of BaSnS2

“…Selected bond distances and angles are shown in Table 3. The bond distances range from 3.059(18) to 3.277 (19) Å and from 2.642(19) to 2.677(18) Å for Ba-S and Sn-S, respectively. These bond distances are typical for Ba-S bonds of octahedrally coordinated Ba 2þ atoms, such as in Ba 5 Cu 8 In 2 S 12 , [39] and Sn-S bonds for trigonally coordinated Sn 2þ atoms, such as in Ba 7 Sn 5 S 15 .…”

“…[5] More recently, the synthesis and physical properties of ternary [6,7] and quaternary [8][9][10][11] chalcogenides have been of intense interest, not only due to an interest in their fundamental properties but also for applied research toward energy-related applications. [12][13][14][15][16] For certain materials, the electrical properties can be modified by a variation in stoichiometry, [17][18][19] while others display transport properties that are atypical of compositions in this class of materials. [20,21] Wide bandgap semiconductor chalcogenides continue to be of interest due to their interest in a broad range of technological applications.…”

Structural diversity of CuZn2InSe4 quaternary chalcogenides: electronic and phonon properties from first principles

“…These new systems have been realized in the laboratory showing that the electric properties can be tuned by stoichiometry variations or doping. [6][7][8][9][10][11] Recent experiments have shown that CuZn 2 InSe 4 , CuZn 2 -InTe 4 , CuCd 2 InTe 4 , CuMn 2 InTe 4 , and AgZn 2 InTe 4 have low thermal conductivity. [11][12][13][14][15][16][17][18][19][20][21] These results are consistent with the low measured thermal conductivity for related systems such as Cu 2 ZnSnS 4 and Cu 2 CdSnSe 4 , which belong to the widely studied class I 2 -II-IV-VI 4 (I ¼ Cu, Ag; II ¼ Cd, Zn, Ca, Co, Fe, V; IV ¼ Si, Sn, Ge; VI ¼ S, Se, Te).…”

“…These new systems have been realized in the laboratory showing that the electric properties can be tuned by stoichiometry variations or doping. 6–11…”