Composes definis dans le systeme AgInSe structure cristalline de □2AgIn5Se8

Crystal structure of CuFe2InSe4 from X-ray powder diffraction

“…In-Se [2.576(5)Å] is also in good agreement with similar distances in CuInSe 2 (2.591) [26], AgIn 5 Se 8 (2.59Å average) [38], ZnIn 2 Se 4 (2.546Å average) [39], LiInSe 2 (2.57Å) [40] and CuFeInSe 3 (2.602Å) [37]. All these compounds were found in the ICSD database [41].…”

Vertical section AgIn5Se8–CdIn2Se4 and crystal structure of the AgIn5Se8 compound (4T-polytype)

“…The X-ray powder diffraction pattern of the The obtained results are in good accordance with those reported in Ref. [2]. The X-ray powder diffraction pattern of the sample with a composition of 98 mol.% AgIn 5 Se 8 -2 mol.% CdIn 2 Se 4 indicated the appearance in the AgIn 5 Se 8 homogeneity region of a polytype of this compound with c/a = 2.…”

“…[2] that AgIn 5 Se 8 crystallizes in space group P42m with lattice parameters a = 0.57934(4) nm, c = 1.16223(2) nm and c/a = 2.0061. Frangis et al [3], using electron microscopy, investigated the formation of three tetragonal polytypes of this compound with c/a = 1, 2, 4 though a complete investigation of their crystal structure was not performed.…”

Structural, optical and electrical properties of Sb doped and undoped AgIn1 − xGaxSe2 and Ag(InGa)5Se8 thin films

“…The (110) peak in I–III–VI chalcopyrites is always considered as a signature of the formation of OVCs . The formation mechanism of OVC in I–III–VI, when they become Group III rich has been explained using pseudo‐binary phase diagrams in papers by Zhang et al and Benoit et al . According to their model, the first principles total energy calculations explain the stabilization of on‐tie line OVC of I–III 5 –VI 8 compounds by the formation of () defect pairs in every four units of I–III–VI 2 .…”

“…The possibility () defect pair in every four units is very well corroborated by the compositional analysis of the films. Palatnik and Rogacheva assigned the space groups I whereas Benoit et al assigned the space group P for AgIn 5 Se 8 tetragonal chalcopyrite structure from a more accurate X‐ray analysis. The peak position in our OVC samples go along with that of Benoit et al and so the Set 2 samples are assigned with space group P.…”