Volume 92 Issue 19 | p. 29 | Concentrates
Issue Date: May 12, 2014

Lead-Free Perovskite Solar Cells

For low-cost photovoltaics, an ammonium tin halide salt offers a lead-free alternative to current perovskite materials
Department: Science & Technology
News Channels: Materials SCENE
Keywords: perovskite, photovoltaic, solar cell, dye-sensitized solar cell, quantum dot solar cell

Solar power enthusiasts have been riding on a wave of recent reports describing increasingly impressive performance of perovskite-based solar cells. The devices, which feature light-absorbing organometal halide materials with the perovskite crystal structure, are promising because they are efficient at converting sunlight to electricity and are relatively inexpensive to make. But one shortcoming still hinders the field: Nearly every study focuses on lead-based perovskites. To address concerns of possible lead toxicity, Northwestern University researchers have . . .

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