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The Advanced Light Source is a U.S. Department of Energy scientific user facility at Lawrence Berkeley National Laboratory. Our mission is to advance science for the benefit of society by providing our world-class synchrotron light source capabilities and expertise to a broad scientific community.

Slideshow

A Properly Tailored Tail Boosts Solar-Cell Efficiency

With the help of structural insights from the ALS, researchers optimized the fit between organic and inorganic ions in a perovskite solar-cell material. The work increased the material’s power-conversion efficiency and stability and opens up a new avenue for improving the current-carrier dynamics of a promising class of materials. Read more »PPT-icon-35 PDF-icon-35

Graphene Outperforms Metal Junctions for 2D Semiconductors

Researchers found that graphene performs ten times better than metal in transmitting a photoinduced current across interfaces with 2D semiconductors. Nanoscale-resolution band-structure measurements provided a deeper understanding of charge transport in these systems and will help in engineering more efficient contacts. Read more »

Meteorites Reveal Magnetic Record of Protoplanet Churn

Researchers detected the signatures of ancient magnetic fields imprinted in the ferromagnetic grains of meteorites that originated from the same parent body. The results, combined with radioisotopic dating of the samples, support an extended time frame for the cooling of molten protoplanetary cores. Read more »

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