Radiation Effects in Sapphire

Effect of Hole Transport Materials and Their Dopants on the Stability and Recoverability of Perovskite Solar Cells on Very Thin Substrates after 7 MeV Proton Irradiation

“…Polymer substrates deteriorate under radiations and atomic oxygen on LEOs. [34,35] Therefore, thin (175 μm/0.175 mm) sapphire substrates which have excellent optical transmittance and radiation tolerance [36] are chosen for this work. For the radiation stability studies, 7 MeV protons under accumulated fluences of 10 11 , 10 12 , and 10 13 protons cm −2 were chosen to mimic proton radiation experienced for 1, 10, and 100 years on LEOs.…”

Nanostructured Materials and Shaped Solids for Essential Improvement of Energetic Effectiveness and Safety of Nuclear Reactors and Radioactive Wastes

“…Nesvizhevskiy at the Institut Laue-Langevin (Grenoble, France) [38,39], the products made from shaped sapphire crystals at ISSP RAS invariably retain their parameters in the active zone of the reactor. The data are supported by the direct experiments on the transparency of sapphire fibers subjected to ionizing irradiation [31][32][33][34]. On the other hand, light guides with transversal geometry of photonic crystals contain empty cores whose transparency cannot be deteriorated by radiation defects [30,46].…”

“…The first kind uses shaped sapphire fibers grown by the EFG technique. Several papers of independent authors devoted to shaped sapphire single crystals show that this material is able to withstand intensive radiation flows inside active zones of nuclear reactors [31][32][33][34]. Moreover, the color centers produced by irradiation deteriorate the optical transparency of sapphire in the ultraviolet region whereas we can choose nanoscintillators emitting light in the visible range.…”