The influence of spectral solar irradiance variations on the performance of selected single-junction and multijunction solar cells

An Investigation into Spectral Parameters as they Impact CPV Module Performance

“…Although studying Isc provides a means to avoid the voltage temperature dependence, care must be taken in applying Isc results to module efficiency. It has been documented in the literature that a decrease in Isc/DNI has less than a 1:1 relationship with efficiency [7]. This reduced effect on efficiency is due to fill factor, FF, increasing as current mismatch increases in multi-junction cells.…”

Optimization of Multijunction Solar Cells Through Indoor Energy Yield Measurements

“…However, this is attained at the cost of a higher sensitivity to spectral variations. In the field, the solar spectrum changes over the course of the day and the year, with the air mass (AM) and the turbidity [or aerosol optical depth (AOD)] being the most influential parameters [1]. Both AM and turbidity cause an imbalance in the spectral content mainly by reducing the high-energy photon content (i.e., toward a top-cell current limited situation).…”

Tuning the current ratio of a CPV system to maximize the energy harvesting in a particular location

“…Regarding the first issue, several authors have tackled the problem of analyzing the effect of spectral variations on the energy annually produced by multijunction solar cells [8][9][10][11][12][13][14][15][16]. Some of them have proposed to use a certain spectrum, different from AM1.5D, or they have determined the optimum combination of subcell bandgaps that maximizes the energy harvesting.…”