At top, domains with opposite electrical polarization, averaging about 140 nanometers wide and separated by walls 2 nanometers thick, form a well-aligned array in a thin film of bismuth ferrite.…
Read MoreCredit: SolarWorld. A lot of attention is paid to making photovoltaic modules more cost-effective by reducing the costs associated with the active materials, and, indeed silicon prices seem to be…
Read MoreGood for SunPower. This 24% efficiency was reached in a large silicon PV wafer, not just a test unit a lab.
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