What is solar spectrum?

Solar spectrum refers to the distribution of solar irradiation across different wavelengths, including UV light, visible light (sunlight), and near-infrared light. It plays a crucial role in efficiently harnessing solar energy through photocatalysis. AI generated definition based on: Interface Science and Technology, 2023

What are the three main regions of the solar spectrum?

The solar spectrum can be divided into three main regions: the ultraviolet (UV), visible, and infrared (IR). The UV includes light with a wavelength shorter than 400 nanometers (nm). UV photons have energies ranging from approximately 3 to 5 electron Volts (eV). The visible region extends from 400 to 700 nm.

What is the peak wavelength of the solar spectrum?

For the solar spectrum in Figure 1 this peak wavelength occurs at 481 nm. This peak wavelength, λ max inversely with temperature, that is λ where γ ≈ 2898 μm⋅K. The earth is at a temperature of 300 K. It, too, radiates blackbody radiation.

What is the irradiance of the solar spectrum?

As depicted in Fig. 1.9, the solar spectrum is made up of 3%–5% UV light, 42%–43% visible light, and 52%–55% near-infrared (NIR) light . The irradiance at earth's surface is lower than that at the top of atmosphere due to light scattering and absorption by certain gas molecules (N 2, O 2, H 2 O, CO 2, etc.).

Where is the peak of the solar spectrum located?

The peak of the solar spectrum is within the visible spectrum. The passage goes on to discuss the importance of intensity and energy delivered for solar power, but the answer to the question is in the first sentence.

What is solar reference spectrum?

Solar reference spectrum is an absolute value of solar irradiance at a certain wavelength band. Solar reference spectrum, usually determined during the solar minimum or low solar activity periods, has important implications for climate science and sensor radiometric calibration.