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Spectral solar irradiance, atmospheric component and its relation with the production of photovoltaic current

Abstract:

We present results of spectral solar irradiance measured by a high quality doble-monocromator spectroradiometer in different seasons at the Astronomical Observatory of Rosario, Argentina. Since measures were done in the UV and visible ranges, we extended the measurements using the SMARTS model. Also, the model is applied to extend the analysis of spectral solar irradiance for Recife (Brazil) and Urcuquí (Ecuador). The maximum photovoltaic current for different solar cells (monolayer and multilayer) was derived using spectral irradiance associated to quantum efficiency of the PV cells. At 5th May 2013, the calculated photovoltaic currents were: 33.47 mA/cm2 (mono-Si); 25.42 mA/cm2 (poly-Si); 18.52 mA/cm2 (CdTe); 12.28 mA/cm2 (multilayer cell). The sensitivity of each cell technology to different atmospheric components (e.g., aerosols, water vapour, ozone) is also shown.