Arable land is at an all-time premium. Since the last ice age, humans have cleared one-third of the earth’s forests and two-thirds of its wild grasslands, much of it for agriculture. And as the world ...

A new single molecule can absorb the full spectrum of sunlight and turn it into valuable hydrogen. Freeing hydrogen to use as fuel is a major science holy grail in the 21st century. Costly, ...

(Nanowerk News) The sunlight received by Earth is a mixed bag of wavelengths ranging from ultraviolet to visible to infrared. Each wavelength carries inherent energy that, if effectively harnessed, ...

The system enables measurements under controlled irradiance, spectrum, and temperature conditions. It can combine 0.4% ...

Solar cells are made from semiconductors whose ability to respond to light is determined by their band gaps (energy gaps). Different colors have different energies, and no single semiconductor has a ...

Solar cells that combine traditional silicon with cutting-edge perovskites could push the efficiency of solar panels to new heights. Beyond Silicon, Caelux, First Solar, Hanwha Q Cells, Oxford PV, ...

The ASTM G173 Standard Spectral Distribution of Sunlight represents a standard, reference solar spectrum that is used for solar photovoltaics testing and calibration purposes. It was defined in the ...

A solar power device that could theoretically double the efficiency of conventional solar cells. Solar panels cover a growing number of rooftops, but even decades after they were first developed, the ...

Click to open image viewer. CC0 Usage Conditions ApplyClick for more information. “PHOTOGRAPHIC MAP OF THE SOLAR SPECTRUM / MADE BY PROF. H. A. ROWLAND, JOHNS HOPKINS UNIVERSITY.” This is from the ...