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Recognition of lunar glass droplets produced directly from endogenous liquids - The evidence from S-ZN coatings

Concentrated deposits of ultramafic droplets of green glass at Apollo 15 and orange and black glass at Apollo 17 are generally accepted as having volcanic, and so endogenous, origins. Since these droplets have S + Zn surface coatings with characteristics that fit a volcanic origin, the presence of similar coatings on dispersed droplets are taken as a good criterion of their volcanic origin. This criterion in concert with other criteria (homogeneity, absence of shocked relicts) that distinguish between volcanic and impact origins, has led to identification of a new ultramafic endogenous liquid that was erupted at Apollo 15. The brown glass droplets representing this liquid have a higher TiO2 content and are more mafic than any of the Apollo 15 basalts.

Butler, P., Jr.↗

Chemical and Electronic Structure at the Interface between a Sputter-Deposited Zn(O,S) Buffer and a Cu(In,Ga)(S,Se) 2 Solar Cell Absorber

The chemical and electronic structure of the interface between a sputter-deposited Zn(O,S) buffer layer and an industrial Cu(In,Ga)(S,Se) 2 (CIGSSe) absorber for thin-film solar cells is investigated with X-ray and UV photoelectron spectroscopy, inverse photoemission spectroscopy, and X-ray emission spectroscopy. We find a CIGSSe absorber surface band gap of 1.61 (±0.14) eV, which is significantly increased as compared to the minimal value derived with bulk-sensitive methods (≈1.1 eV). We find no indication for diffusion of absorber elements into the buffer layer. Surface- and bulk-sensitive measurements of the buffer layer suggest the presence of S-Zn and S-O bonds in the Zn(O,S) layer. We find that the naturally existing downward band bending toward the CIGSSe absorber surface is increased by the formation of the interface, likely enhancing carrier separation under illumination. We also derive a flat conduction band alignment, in line with the reported high conversion efficiencies of corresponding large-area solar cells.

14 SOLAR ENERGY↗

Materials Data on ZnS by Materials Project

ZnS is Moissanite 9R structured and crystallizes in the trigonal R3m space group. The structure is three-dimensional. there are three inequivalent Zn2+ sites. In the first Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. All Zn–S bond lengths are 2.36 Å. In the second Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. All Zn–S bond lengths are 2.36 Å. In the third Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. All Zn–S bond lengths are 2.36 Å. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the second S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the third S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra.

36 MATERIALS SCIENCE↗

Materials Data on ZnS by Materials Project

ZnS is Moissanite 9R-like structured and crystallizes in the trigonal P3m1 space group. The structure is three-dimensional. there are five inequivalent Zn2+ sites. In the first Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. All Zn–S bond lengths are 2.36 Å. In the second Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. All Zn–S bond lengths are 2.36 Å. In the third Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. All Zn–S bond lengths are 2.36 Å. In the fourth Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. All Zn–S bond lengths are 2.36 Å. In the fifth Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. All Zn–S bond lengths are 2.36 Å. There are five inequivalent S2- sites. In the first S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the second S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the third S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. All S–Zn bond lengths are 2.36 Å. In the fourth S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the fifth S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra.

36 MATERIALS SCIENCE↗

Materials Data on ZnS by Materials Project

ZnS crystallizes in the trigonal P3m1 space group. The structure is two-dimensional and consists of one sulfanide;zinc molecule and one ZnS sheet oriented in the (0, 0, 1) direction. In the ZnS sheet, there are eleven inequivalent Zn2+ sites. In the first Zn2+ site, Zn2+ is bonded in a trigonal non-coplanar geometry to three equivalent S2- atoms. All Zn–S bond lengths are 2.40 Å. In the second Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. There are three shorter (2.34 Å) and one longer (2.35 Å) Zn–S bond lengths. In the third Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. There are three shorter (2.36 Å) and one longer (2.39 Å) Zn–S bond lengths. In the fourth Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. There are three shorter (2.36 Å) and one longer (2.38 Å) Zn–S bond lengths. In the fifth Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. There are three shorter (2.35 Å) and one longer (2.36 Å) Zn–S bond lengths. In the sixth Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. There are three shorter (2.36 Å) and one longer (2.39 Å) Zn–S bond lengths. In the seventh Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. There are three shorter (2.35 Å) and one longer (2.37 Å) Zn–S bond lengths. In the eighth Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. There are three shorter (2.35 Å) and one longer (2.39 Å) Zn–S bond lengths. In the ninth Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. There are three shorter (2.34 Å) and one longer (2.35 Å) Zn–S bond lengths. In the tenth Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. There are three shorter (2.35 Å) and one longer (2.36 Å) Zn–S bond lengths. In the eleventh Zn2+ site, Zn2+ is bonded to four S2- atoms to form distorted corner-sharing ZnS4 tetrahedra. There are three shorter (2.34 Å) and one longer (2.40 Å) Zn–S bond lengths. There are eleven inequivalent S2- sites. In the first S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the second S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the third S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the fourth S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the fifth S2- site, S2- is bonded in a trigonal non-coplanar geometry to three equivalent Zn2+ atoms. In the sixth S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the seventh S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the eighth S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the ninth S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the tenth S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the eleventh S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra.

36 MATERIALS SCIENCE↗

Materials Data on ZnS by Materials Project

ZnS is Moissanite 9R-like structured and crystallizes in the trigonal P3m1 space group. The structure is three-dimensional. there are six inequivalent Zn2+ sites. In the first Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. All Zn–S bond lengths are 2.36 Å. In the second Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. All Zn–S bond lengths are 2.36 Å. In the third Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. All Zn–S bond lengths are 2.36 Å. In the fourth Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. All Zn–S bond lengths are 2.36 Å. In the fifth Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. All Zn–S bond lengths are 2.36 Å. In the sixth Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. All Zn–S bond lengths are 2.36 Å. There are six inequivalent S2- sites. In the first S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the second S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. All S–Zn bond lengths are 2.36 Å. In the third S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the fourth S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the fifth S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the sixth S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra.

36 MATERIALS SCIENCE↗

Materials Data on ZnS by Materials Project

ZnS crystallizes in the trigonal P3m1 space group. The structure is two-dimensional and consists of one sulfanide;zinc molecule and one ZnS sheet oriented in the (0, 0, 1) direction. In the ZnS sheet, there are ten inequivalent Zn2+ sites. In the first Zn2+ site, Zn2+ is bonded in a trigonal non-coplanar geometry to three equivalent S2- atoms. All Zn–S bond lengths are 2.40 Å. In the second Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. There are three shorter (2.36 Å) and one longer (2.38 Å) Zn–S bond lengths. In the third Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. There are three shorter (2.36 Å) and one longer (2.39 Å) Zn–S bond lengths. In the fourth Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. There are three shorter (2.34 Å) and one longer (2.35 Å) Zn–S bond lengths. In the fifth Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. There are three shorter (2.34 Å) and one longer (2.35 Å) Zn–S bond lengths. In the sixth Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. There are three shorter (2.34 Å) and one longer (2.35 Å) Zn–S bond lengths. In the seventh Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. There are three shorter (2.35 Å) and one longer (2.37 Å) Zn–S bond lengths. In the eighth Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. There are three shorter (2.35 Å) and one longer (2.36 Å) Zn–S bond lengths. In the ninth Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. There are three shorter (2.35 Å) and one longer (2.39 Å) Zn–S bond lengths. In the tenth Zn2+ site, Zn2+ is bonded to four S2- atoms to form corner-sharing ZnS4 tetrahedra. There are three shorter (2.35 Å) and one longer (2.40 Å) Zn–S bond lengths. There are eleven inequivalent S2- sites. In the first S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the second S2- site, S2- is bonded to four equivalent Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the third S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the fourth S2- site, S2- is bonded in a trigonal non-coplanar geometry to three equivalent Zn2+ atoms. In the fifth S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the sixth S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. All S–Zn bond lengths are 2.36 Å. In the seventh S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the eighth S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the ninth S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the tenth S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra. In the eleventh S2- site, S2- is bonded to four Zn2+ atoms to form corner-sharing SZn4 tetrahedra.

36 MATERIALS SCIENCE↗

Materials Data on ZnS by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗

Materials Data on ZnS by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗

Materials Data on ZnS by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗