Radiation damage evaluation on AlGaAs/GaAs solar cells

Radiation damage in biomimetic dye molecules for solar cells.

A significant obstacle to organic photovoltaics is radiation damage, either directly by photochemical reactions or indirectly via hot electrons. Such effects are investigated for biomimetic dye molecules for solar cells (phthalocyanines) and for a biological analog (the charge transfer protein cytochrome c). Both feature a central transition metal atom (or H(2)) surrounded by nitrogen atoms. So...

Radiation induced damage and recovery in poly(3-hexyl thiophene) based polymer solar cells.

Polymer solar cells have been characterized during and after x-ray irradiation. The open circuit voltage, dark current and power conversion efficiency show degradation consistent with the generation of defect states in the polymer semiconductor. The polymer solar cell device remained functional with exposure to a considerable dose (500 krad (SiO(2))) and showed clear signs of recovery upon remo...

Understanding Radiation Damage to Cells Using Microbeams

Cellular micro-irradiation using ion beams is now recognised as a highly versatile technique for understanding how ionising radiation interacts with living cells and tissues. The strength of the micro-irradiation technique lies in its ability to deliver precise doses of radiation to selected individual cells (or sub-cellular targets) in vitro. The application of this technique in the field of r...

Solar ultraviolet radiation on the ground level of Isfahan

Introduction: Ultraviolet (UV) radiation affects human organs such as skin, eyes and immune system, as well as animals and plants. The main natural source of UV radiation is the Sun. To study the effects of solar UV radiation there is a need to quantify variations of solar energy received on the earth surface at different intervals. Materials and Methods: To measure UV radiation a broadband fib...

Radiation track and DNA damage