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Iron Pyrite Oxygen Alloy for Improved Photovoltaic Efficiencies and Increased Photovoltages

詳細技術說明: Iron pyrite (FeS2) is a promising photovoltaic material because of its strong light absorption, sufficient minority carrier diffusion length, and relative abundance. However, the band gap of pyrite (Eg = 0.85-0.95 eV) is somewhat narrow for optimal photovoltaic applications and subsequently the open circuit voltage of pyrite based devices (Voc < 0.2 V) is too low. Researchers at the University of California, Irvine have developed a new iron pyrite oxygen alloy with a predicted band gap of 1.2-1.3 eV, compared to 0.85-0.95 eV for pure iron pyrite.

*Abstract: A new iron pyrite oxygen alloy that has ~10% of the sulfur in iron pyrite replaced with oxygen to increase the band gap of the material. This resulting material has potentially greater photovoltages and improved photovoltaic efficiencies than iron pyrite.

*Principal Investigation: Name: Jun Hu
Department:

Name: Matthew Law
Department:

Name: Ruqian Wu
Department:

Name: Yanning Zhang
Department:

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