biostudies-literatureUnknown68(Pt 6)Suzuki AIn the solid-state synthesis of impurity-doped CaGa(2)S(4), calcium tetra-thio-digallate(III), a novel phosphor material (denominated as the X-phase), with monoclinic symmetry in the space group P2(1)/a, has been discovered. Its emission intensity is higher than that of the known ortho-rhom-bic polymorph of CaGa(2)S(4) crystallizing in the space group Fddd. The asymmetric unit of the monoclinic phase consists of two Ca, four Ga and eight S sites. Each of the Ca and Ga atoms is surrounded by seven and four sulfide ions, respectively, thereby sharing each of the sulfur sites with the nearest neighbours. In contrast, the corresponding sites in the ortho-rhom-bic phase are surrounded by eight and four S atoms, respectively. The photoluminescence peaks from Mn(2+) and Ce(3+) in the doped X-phasActa crystallographica. Section E, Structure reports onlinei42https://www.ebi.ac.uk/biostudies/studies/S-EPMC3379052biostudies-literatureA novel monoclinic phase of impurity-doped CaGa(2)S(4) as a phosphor with high emission intensity.PMC3379052Suzuki ATakizawa TKitajima IShigetaka NHidaka CfalseA novel monoclinic phase of impurity-doped CaGa(2)S(4) as a phosphor with high emission intensity.In the solid-state synthesis of impurity-doped CaGa(2)S(4), calcium tetra-thio-digallate(III), a novel phosphor material (denominated as the X-phase), with monoclinic symmetry in the space group P2(1)/a, has been discovered. Its emission intensity is higher than that of the known ortho-rhom-bic polymorph of CaGa(2)S(4) crystallizing in the space group Fddd. The asymmetric unit of the monoclinic phase consists of two Ca, four Ga and eight S sites. Each of the Ca and Ga atoms is surrounded by seven and four sulfide ions, respectively, thereby sharing each of the sulfur sites with the nearest neighbours. In contrast, the corresponding sites in the ortho-rhom-bic phase are surrounded by eight and four S atoms, respectively. The photoluminescence peaks from Mn(2+) and Ce(3+) in the doped X-phas2012-01-01T00:00:00Z2012 Jun2025-04-05T13:00:31.507Z2019-03-27T00:54:41ZS-EPMC33790522271927310.1107/S1600536812019113