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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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NH4PO2F2 is Silicon tetrafluoride-derived structured and crystallizes in the orthorhombic Pnma space group. The structure is zero-dimensional and consists of four ammonium molecules and four phosphorodifluoridic acid molecules.
CH3NH3I is Silicon tetrafluoride-derived structured and crystallizes in the orthorhombic Pbcm space group. The structure is zero-dimensional and consists of four hydriodic acid molecules and four methylammonium molecules.
C3H7NH3SnBr3 is Silicon tetrafluoride-derived structured and crystallizes in the monoclinic P2_1 space group. The structure is zero-dimensional and consists of two tribromotin molecules and two trimethylazanium molecules.
C3H7NH3SnCl3 is Silicon tetrafluoride-derived structured and crystallizes in the orthorhombic Cmc2_1 space group. The structure is zero-dimensional and consists of four trichlorostannane molecules and four trimethylazanium molecules.
CH3NH3Cl is Silicon tetrafluoride-derived structured and crystallizes in the orthorhombic Pbcm space group. The structure is zero-dimensional and consists of four hydrochloric acid molecules and four methylammonium molecules.
CNSNH4 is Silicon tetrafluoride-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four ammonium molecules and four thiocyanic acid molecules.
NH4ReO4 is Silicon tetrafluoride-derived structured and crystallizes in the tetragonal I4_1/a space group. The structure is zero-dimensional and consists of four ammonium molecules and four rhenium;tetrahydrate molecules.
C5H12N2O is Silicon tetrafluoride-derived structured and crystallizes in the orthorhombic Pmn2_1 space group. The structure is zero-dimensional and consists of two cyanic acid molecules and two tetramethylammonium molecules.
NH4H2PO2 is Silicon tetrafluoride-derived structured and crystallizes in the orthorhombic Cmme space group. The structure is zero-dimensional and consists of four 6303-21-5 molecules and four ammonium molecules.
CH3NH3I is Silicon tetrafluoride-derived structured and crystallizes in the monoclinic P2_1/m space group. The structure is zero-dimensional and consists of two hydriodic acid molecules and two methylammonium molecules.
P2O9 is Silicon tetrafluoride-like structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of eight phosphoric acid molecules and four water molecules.
HoVO4 is Silicon tetrafluoride-derived structured and crystallizes in the tetragonal I4_1/amd space group. The structure is zero-dimensional and consists of four ctk1g1258 molecules and four holmium atom molecules.
NH4Cl is Silicon tetrafluoride-derived structured and crystallizes in the cubic P-43m space group. The structure is zero-dimensional and consists of one ammonium molecule and one hydrochloric acid molecule.
NH4Br is Silicon tetrafluoride-derived structured and crystallizes in the cubic P-43m space group. The structure is zero-dimensional and consists of one ammonium molecule and one hydrobromic acid molecule.
MnO4SO4 is Silicon tetrafluoride-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four mangan(iv)-hydroxyd molecules and four sulfuric acid molecules.
Singlet exciton fission has the potential to increase the efficiency of crystalline silicon solar cells beyond the conventional single junction limit. Perhaps the largest obstacle to achieving this enhancement is uncertainty about energy coupling mechanisms at the interfaces between silicon and exciton fission materials such as tetracene. Here, the previously reported silicon‐hafnium oxynitride‐tetracene structure is studied and a combination of magnetic‐field‐dependent silicon photoluminescence measurements and density functional theory calculations is used to probe the influence of the interlayer composition on the triplet transfer process across the hafnium oxynitride interlayer. It is found that hafnium oxide interlayers do not show triplet exciton sensitization of silicon, and that nitrogen content in hafnium oxynitride layers is correlated with enhanced sensitization. Calculation results reveal that defects in hafnium oxynitride interlayers with higher nitrogen content introduce states close to the band‐edge of silicon, which can mediate the triplet exciton transfer process. Some defects introduce additional deleterious mid‐gap states, which may explain observed silicon photoluminescence quenching. These results show that band‐edge states can mediate the triplet exciton transfer process, potentially through a sequential charge transfer mechanism.
C6N3H18S2O4CH3SO4 is Silicon tetrafluoride-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four [bis[(trimethylaminio)sulfonyl]amine]ide molecules and four methyl sulfate molecules.
Recently, many studies have reported the efficacy of 1D silicon nanostructures as anode materials (mostly nanowires) due to their large surface to volume ratio which could be an advantage in terms of charging kinetics. Anode design is a crucial factor for the further development of lithium-ion battery (LIB) technology, especially in terms of achieving the high charging rate performance, as typically needed in electric vehicles (EV). 3D nanostructures have been identified as the key to dramatically enhanced charging rate of LIB, in addition to the change of materials (from carbon-based anode to silicon-based). However, existing fabrication methodologies for 3D nanostructures are inherently expensive – using advanced lithography techniques or other nanopatterning methodologies, as well as using additive manufacturing approaches. Electrospinning (as an integrated additive manufacturing methodology) may be used to produce low-cost 3D-printed fiber structures. Here, in the present study, we demonstrate the groundwork in this field of research in the past 3–4 years, which would allow the extension of this special additive manufacturing approach to reach nanoscale 3D-printed fiber structures more economically and with scalability for manufacturing. This would pave the way to achieve the order of magnitude increase in battery charging rate as needed to realize the vision of the electrification of mobility/transportation.