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Hamamatsu Corp. - Earth Innovations LB 2/24

Multijunction Solar Cell Design Could Exceed 50% Efficiency

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WASHINGTON, Jan. 15, 2013 — A lattice-matched, triple-junction solar cell proposed by an international team of scientists has the potential to break the 50 percent conversion efficiency mark, a goal in multijunction photovoltaic development. Produced by scientists in the Electronics Technology and Science Div. of the US Naval Research Laboratory (NRL), in collaboration with researchers at Imperial College London and MicroLink Devices Inc. of Niles, Ill., the solar cell could achieve this efficiency with novel semiconductor materials and with band structure engineering via strain-balanced quantum walls. ...Read full article

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    Published: January 2013
    Glossary
    bandgap
    In semiconductor physics, the term bandgap refers to the energy range in a material where no electronic states are allowed. It represents the energy difference between the valence band, which is the highest range of energy levels occupied by electrons in their ground state, and the conduction band, which is the lowest range of unoccupied energy levels. The bandgap is a crucial parameter in understanding the electrical behavior of semiconductors and insulators. Here are the key components...
    AmericasbandgapBasic Scienceconversion efficiency barrierDOEenergyenergy harvestingEnglandEuropegreen photonicsIllinoisImperial College LondonMicroLink Devicesmultijunction solar cellsNew YorkNRLphotovoltaicsResearch & TechnologySensors & Detectorssolar cellstriple-junction solar cellUS Department of EnergyUS Naval Research LaboratoryWashington DCwavelength bands

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