Solar cell short wave response

What is the spectral response of a silicon solar cell?

A spectral response curve is shown below. The spectral response of a silicon solar cell under glass. At short wavelengths below 400 nm the glass absorbs most of the light and the cell response is very low. At intermediate wavelengths the cell approaches the ideal. At long wavelengths the response falls back to zero.

Why do crystalline silicon solar cells degrade in a short wavelength?

If the photon energy is greater than the bandgap energy of the silicon solar cell, silicon is unable to absorb the high-energy photons efficiently ( Hovel et al., 1979 ). Hence, the spectral response of crystalline silicon solar cells degrades in a short wavelength.

Do solar cells improve at short wavelengths?

To verify the improvement at short wavelengths (300,400,500, and 600 nm), solar cells with a downshifting layer, solar cells without a downshifting layer, and solar cells with a layer of PMMA only were measured at four different wavelengths: EQE, Reflectance, and IQE, as shown in Table 3 (a) and (b), respectively.

What is the wavelength of a solar cell?

w = h c E = 1, 110 nanometers = 1.11 × 10 − 6 meters The wavelengths of visible light occur between 400 and 700 nm, so the bandwidth wavelength for silicon solar cells is in the very near infrared range. Any radiation with a longer wavelength, such as microwaves and radio waves, lacks the energy to produce electricity from a solar cell.

How spectral response and quantum efficiency are used in solar cell analysis?

The spectral response and the quantum efficiency are both used in solar cell analysis and the choice depends on the application. The spectral response uses the power of the light at each wavelength whereas the quantum efficiency uses the photon flux. Converting QE to SR is done with the following formula:

What factors affect solar cell efficiency?

In short, PV cells are sensitive to light from the entire spectrum as long as the wavelength is above the band gap of the material used for the cell, but extremely short wavelength light is wasted. This is one of the factors that affects solar cell efficiency. Another is the thickness of the semiconducting material.