Modelling of solar cell degradation in space

Modeling the effect of 1MeV electron irradiation on the performance of n+–p–p+ silicon space solar cells

“…It was observed that the space solar figures of merit (the short circuit current , the open circuit voltage , the maximum output power , the fill factor and the conversion efficiency ) decrease linearly with the logarithm of the fluence. The degradation was analytically modeled [10][11][12][13][14] in order to predict the effect of the long term exposure of the solar cells [15,16]. For example, is related to the irradiation fluence by a simple formula of the form [17]:…”

Numerical analysis of degradation kinetics in CdTe thin films

“…The photoluminescence studies conclude that the defect position is as important as its type, level and density (Shvydka et al, 2003;Ahn et al, 2012). Finally, we relate the time-dependent parameters to the device parameters, X, (Shvydka et al, 2003;Makhamn et al, 2010;Myong, 2007)…”

“…Then, the new defect density will change the device behavior by changing the device parameters and band diagrams (Makhamn et al, 2010;Myong, 2007). The kinetics of the excess carrier creation is coupled to the excess defect creation via linear or quadratic order profiles (Harju et al, 2000;Shvydka et al, 2003;Stutzmann et al, 1985) …”

“…Practically, the device parameters of a solar cell under operation have to be recorded for several years and then the degradation rate of each parameter can be estimated by fitting the obtained dataset with a proper function (Makhamn et al, 2010). This approach is time consuming and gives an idea close to the device behavior under a specific stress condition only.…”

Measurement of the limiting subcell in multijunction space solar devices by restricted‐wavelength‐range illumination

“…Such a bombardment strongly modifies the solar devices, and it generally decreases their performance, making radiation hardness a fundamental feature to be taken into account. ()…”