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Through the high temperature solution method, three new phosphates, Cs8Pb4(P2O7)4, CsLi7(P2O7)2 and LiCa(PO3)3, were obtained. X-ray diffraction analyses suggest that they crystallize in the space group P1̅ of the triclinic crystal system. However, the three-dimensional (3D) structures of Cs8Pb4(P2O7)4 and CsLi7(P2O7)2 consist of various isolated P2O7 groups, while LiCa(PO3)3 is built up by the 1D (PO3)∞ chain. Detailed structural comparison suggests that the different sizes and coordination environments of Ca2+ and Zn2+ cations influence the whole structures of LiX(PO3)3 (X = Ca and Zn). IR spectroscopy and UV/Vis/NIR diffuse reflectance spectroscopy analyses have been performed to investigate their optical properties. First-principles theoretical studies were also carried out to aid the understanding of electronic structures and linear optical properties. [ABSTRACT FROM AUTHOR]

A new barium borate halide, Ba3B10O17Br2, has been obtained. A detailed structural comparison with other barium borate halides suggested that Ba3B10O17Br2 is the first barium borate halide with a B–O layered structure. First-principles theoretical studies were conducted to aid understanding of the electronic structure and optical properties. [ABSTRACT FROM AUTHOR]

A blue-hazard free, healthy light source will become the mainstream of future lighting, wherein higher energy saving is always a must. Although the use of incandescent bulbs is the most friendly electricity-driven lighting measure from the perspectives of the human eye, melatonin generation, artifacts, ecosystems, the environment, and night skies due to their intrinsically low blue emission, they are phasing out because of energy wasting. We hence devise a highly efficient organic light-emitting diode which exhibits a color mimicking that of an incandescent bulb, and a 120 lm W−1 at 100 cd m−2 power efficacy, which is 12 times that of an incandescent bulb or 1000 times that of a candle. This warm sensation giving lighting device is at least 10 times safer from the retinal protection perspective and 4 times better for melatonin secretion, as compared with the cold white counterparts of the compact fluorescent lamp and the light-emitting diode. [ABSTRACT FROM AUTHOR]

Through the high temperature solution method, three new phosphates, Cs 8 Pb 4 (P 2 O 7 ) 4 , CsLi 7 (P 2 O 7 ) 2 and LiCa(PO 3 ) 3 , were obtained. X-ray diffraction analyses suggest that they crystallize in the space group P1[combining macron] of the triclinic crystal system. However, the three-dimensional (3D) structures of Cs 8 Pb 4 (P 2 O 7 ) 4 and CsLi 7 (P 2 O 7 ) 2 consist of various isolated P 2 O 7 groups, while LiCa(PO 3 ) 3 is built up by the 1D (PO 3 ) ∞ chain. Detailed structural comparison suggests that the different sizes and coordination environments of Ca 2+ and Zn 2+ cations influence the whole structures of LiX(PO 3 ) 3 (X = Ca and Zn). IR spectroscopy and UV/Vis/NIR diffuse reflectance spectroscopy analyses have been performed to investigate their optical properties. First-principles theoretical studies were also carried out to aid the understanding of electronic structures and linear optical properties.

A new barium borate halide, Ba3B10O17Br2, has been obtained. A detailed structural comparison with other barium borate halides suggested that Ba3B10O17Br2 is the first barium borate halide with a B-O layered structure. First-principles theoretical studies were conducted to aid understanding of the electronic structure and optical properties.