The contract includes the supply of hydrogen and nitrogen, silane,
nitrogen trifluoride, dopant mixtures and other products to Hunan Gongchuang's PV facility.
In particular, the manufacturing of photovoltaic cells Manufacture of photovoltaic (PV) cells involves potentially toxins such as lead, mercury, chromium, cadmium, trichlorosilane, sulfur hexafluoride, hydrogen selenide, arsenic, phosphine, and arsine, and produces emissions of greenhouse gases such as sulfur hexafluoride and
nitrogen trifluoride, and chemicals like trichloroethane, acetone and ammonia.
The gases covered by the rule include carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFC), perfluorocarbons (PFC), sulfur hexafluoride (SF6), and other fluorinated gases, including
nitrogen trifluoride (NF3) and hydrofluorinated ethers (HFE).
The contract calls for the supply of hydrogen, nitrogen and argon, as well as specialty gases such as silane,
nitrogen trifluoride (NF3) and dopant mixtures.
The answer: Both are produced with
nitrogen trifluoride ([NF.sub.3]), a gas that is 17,000 times more effective than carbon dioxide at trapping atmospheric heat, according to geochemistry professor Ray Weiss and a team of researchers at the University of California--San Diego Scripps Institution of Oceanography.
Nitrogen Trifluoride (N[F.sub.3]) has been termed the "missing greenhouse gas," with a global warming potential over 17,000 times greater than C[O.sub.2] in a hundred-year period.