Spectral Response Of Solar Panels

A spectral response curve is shown below.

Spectral response of solar panels. Spectral response measurement apparatus measures short circuit current of solar cell at selected wavelengths over a broad range of wavelengths. Sunlight is a portion of the electromagnetic radiation given off by the sun in particular infrared visible and ultraviolet light. The spectral response is conceptually similar to the quantum efficiency. On earth sunlight is scattered and filtered through earth s atmosphere and is obvious as daylight when the sun is above the horizon when direct solar radiation is not blocked by clouds it is experienced as sunshine a combination of bright light and radiant heat.

Spectral response is the ratio of the current generated by the solar cell to the power incident on the solar cell or a detector. In each case the absorptive response black curve is superimposed on the solar spectrum gray curve. Spectral response units of a w is a function of wavelength and is related to the quantum efficiency qe unitless as follows. The spectral response sr of a pv device is the fraction of available irradiance that is converted into current.

Although the spectral effects of direct and diffuse radiation on solar photovoltaic pv performance are relatively well understood recent investigations have shown that there can be a spectral bias introduced due to albedo from common ground surfaces that can impact the optimal selection of pv materials for a known location. 5 second highest after sunpower x series of over 3 200 silicon solar panels photon module survey feb 2014. To determine the impact of sr and spectral irradiance on m si and perovskite cells experimental tests were conducted outdoors used optical filters to select different zones of the spectrum. For the computational simulations of the.

Year 1 energy advantage watt spectral response. In the conventional cell top the wavelengths at which absorption is relatively high include the visible part of the spectrum that our eyes can detect the colored section between about 400 and 700 nanometers. The quantum efficiency gives the number of electrons output by the solar cell compared to the number of photons incident on the device while the spectral response is the ratio of the current generated by the solar cell to the power incident on the solar cell.