Nuclear Technology and Radiation Protection 2012 Volume 27, Issue 1, Pages: 28-32
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Effects of radiation on solar cells as photovoltaic generators
Radosavljević Radovan Lj., Vasić Aleksandra I.
The growing need for obtaining electrical energy through renewable energy
sources such as solar energy have lead to significant technological
developments in the production of the basic element of PV conversion, the
solar cell. Basically, a solar cell is a p-n junction whose characteristics
have a great influence on its output parameters, primarily efficiency.
Defects and impurities in the basic material, especially if located within
the energy gap, may be activated during its lifetime, becoming traps for
optically produced electron-hole pairs and, thus, decreasing the output power
of the cell. All of the said effects could be induced in many ways over a
lifetime of a solar cell and are consistent with the effects that radiation
produces in semiconductor devices. The aim of this paper is to investigate
changes in the main characteristics of solar cells, such as efficiency,
output current and power, due to the exposure of solar systems to different
(hostile) radiation environments.
Keywords: output power, solar cell, radiation environment, dose, efficiency