Abstract
This paper reports on the ionoluminescence (IL) of Zn2SiO4:Eu3+ nanophosphors bombarded with 100MeV Si7+ ions with fluences in the range (3.91–21.48)×1012ionscm−2. The prominent IL emission peaks recorded at 580, 590, 612, 650 and 705nm are attributed to the luminescence centers activated by Eu3+ ions. It is observed that IL intensity decreases and saturates with increase of Si7+ ion fluence. Fourier transform infrared (FT-IR) studies confirm surface/bulk amorphization for a fluence of (3.91–21.48)×1013ionscm−2. These results show degradation of SiO (2ν3) bonds present on the surface of the sample and/or due to lattice disorder produced by dense electronic excitation under heavy ion irradiation. These results are discussed in detail.
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