Laser for solar cell research

Laser for solar cell research

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Credit: NREL/US DEPARTMENT OF ENERGY/SCIENCE PHOTO LIBRARY

Caption: Laser for solar cell research. Spectroscopic laser (red beam) being used to measure properties of a semiconductor thin film used in solar cells. Solar cells use semiconductors to convert the energy in sunlight into electrical energy. The semiconductor thin film being investigated here, consists of a combination of the elements gallium, indium and phosphorus (GaInP). The efficiency of a solar cell is sensitive to its semiconducting properties, and these are determined by its chemical composition. Altering these properties changes a solar cell's efficiency. Photographed at the National Renewable Energy Laboratory, Golden, Colorado, USA, in 1997.

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Keywords: 1997, america, american, colorado, energy, environmentally friendly, environmentally friendly green, equipment, experiment, gallium, golden, indium, industry, laboratory, laser, lasers, measuring, national, phosphorus, photovoltaic, physics, renewable, research, scientific, semiconductor, semiconductors, solar cell, spectroscope, spectroscopic, technological, technology, thin film, united states, us, usa

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