Science, Space and Technology News 2024
Lehigh University researchers have created a revolutionary solar cell material with up to 190% external quantum efficiency, pushing beyond conventional efficiency limits and showing great promise for enhancing future solar energy systems. Further development is required for practical application, supported by a U.S. Department of Energy grant.
These states have energy levels within the optimal subband gaps—energy ranges where the material can efficiently absorb sunlight and produce charge carriers—of around 0.78 and 1.26 electron volts. Schematic of the thin-film solar cell with CuxGeSe/SnS as the active layer. Credit: Ekuma Lab / Lehigh Universityabsorbed from sunlight. However, some advanced materials and configurations developed over the past several years have demonstrated the capability of generating and collecting more than one electron from high-energy photons, representing an EQE of over 100%.
Ekuma, an expert in computational condensed matter physics, developed the prototype as a proof of concept after extensive computer modeling of the system demonstrated theoretical promise.
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