lar cell are the spectral distribution of the irradiance, total ir adiance and temperature [8, 13]. The spectral response is the key parameter of silicon solar cells. In principle, it is the sensitivity of a solar cell corresponding to light of d
In practice this involves a UC layer placed beneath the solar cell to absorb transmitted radiation and re-emit it towards the cell at useful wavelengths. On the other hand, as shown by Fig. 1, an even greater portion of spectral energy is wasted via thermalization.
As advances in nanotechnology have progressed, it has been possible to engineer nanostructures to the benefit of spectral conversion (particularly the UC process). One of the key drawbacks of increasing solar cell efficiency via UC is the rare earth doped material’s limited absorption spectrum.
This is the first report on measurements and analysis of solar spectrum at such a wide range of altitudes, and we find that the spectral distribution at 35 km is almost equivalent to that of AM0, which supplies a suitable AM0 Standard solar cell calibration strategy with high altitude balloon flights.
Other than spectral response, there are many other factors, i.e., weathering, mishandling, aging, etc., that could contribute to the inefficiency of solar cells and this can be projected clearly by obtaining a solar cell’s quantum efficiency as well as its spectral response.
Generally, I–V curves are given preference when measuring the performance of solar cells and less emphasis is given to spectral response, internal quantum efficiency (IQE), and external quantum efficiency (EQE) quantum.