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Ferroelectrics Could Boost Solar Cell Voltages

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BERKELEY, Calif., Sept. 27, 2011 — Some ferroelectric materials can develop extremely high voltages when exposed to light, which could improve solar cells, but scientists haven’t been able to figure out how the process works. Now, researchers at the US Department of Energy's Lawrence Berkeley National Laboratory and the University of California in Berkeley have apparently solved the mystery of one ferroelectric material, bismuth ferrite (BFO), which they say should determine that the same principle can be applied to similar materials. They say the secret is an electronic “bucket brigade” that passes...Read full article

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    Published: September 2011
    Glossary
    ferroelectric materials
    Ferroelectric materials are a type of dielectric materials that exhibit spontaneous electric polarization, meaning they possess a permanent electric dipole moment even in the absence of an external electric field. This polarization arises from the alignment of electric dipoles within the material, which can be spontaneously oriented in a particular direction, typically along one of the crystallographic axes. Key characteristics of ferroelectric materials include: Spontaneous...
    AmericasBFO filmbismuth ferritebucket brigadeDOEelectrical polarizationenergyferroelectric materialsgreen photonicsJan SeidelJoel AgerLawrence Berkeley National LaboratoryMaterialsphotovoltaicsplatinum electrical contactsResearch & Technologysolar cellsUniversity of California Berkeley

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