Structure and crystal field analysis using ionoluminescence of Al2O3: Tm3+ phosphor

Unraveling the Charge State of Oxygen Vacancies in Monoclinic ZrO2 and Spectroscopic Properties of ZrO2:Sm3+ Phosphor

“…The emission of light observed from ZrO 2 :Sm 3+ during 100 MeV Si 7+ ion bombardment is mainly because of the electronic interaction with matter. Here, the IL emission is responsible for both direct and indirect excitation of Sm 3+ ions . If the Si 7+ ions excite directly to Sm 3+ ions, then the emission transitions take place from the excited state to ground state.…”

“…Furthermore, to determine the radius of ion track, which is also referred to as damage cross section, the decay of IL peak intensity with fluence was fitted with the exponential function . It is expressed as I (φ) = I o exp­(−σφ), where I o is the initial IL intensity, I (φ) is the IL intensity at a fluence of φ, and σ is the damage cross section.…”

“…Here, the IL emission is responsible for both direct and indirect excitation of Sm 3+ ions. 82 If the Si 7+ ions excite directly to Sm 3+ ions, then the emission transitions take place from the excited state to ground state. The indirect excitation means the Si 7+ ions create electron−hole pairs in the host, which diffuse and recombine at the Sm 3+ centers.…”

“…Furthermore, to determine the radius of ion track, which is also referred to as damage cross section, the decay of IL peak intensity with fluence was fitted with the exponential function. 82 It is expressed as I(φ) = I o exp(−σφ), where I o is the initial IL intensity, I (φ) is the IL intensity at a fluence of φ, and σ is the damage cross section. The damage cross sections were found to be 0.727 ± 0.003, 0.773 ± 0.002, and 0.635 ± 0.002 nm 2 for the peaks 572, 616, and 660 nm of the ZrO 2 :Sm 3+ samples, respectively.…”