McKeever S W S, Sholom S, Chandler J R
Radiation Dosimetry Laboratory, Department of Physics, Oklahoma State University, Stillwater, OK, USA.
Department of Nuclear Engineering, Institute for Nuclear Security, University of Tennessee, Knoxville, TN, USA.
Radiat Prot Dosimetry. 2019 Dec 31;186(1):65-69. doi: 10.1093/rpd/ncy243.
Electron Paramagnetic Resonance (EPR) and Thermoluminescence (TL) signals have been studied in samples of Gorilla® Glass (GG) from different smartphones as well as some online stores and vendors. Background, radiation-induced and ultraviolet-induced signals were compared between the samples. Significant variability of both EPR and TL signals (in shape and intensity) was observed between samples from different screens as well as over the surface of the same screen, from the same phone. Both the EPR and TL background signals appear to be due to UV exposure during phone manufacture; some phones have higher EPR and TL signals around the edge of the screen, indicating more UV exposure at the edge than in the center. EPR and TL signals in the same GG samples appear correlated: they decayed over the same temperature region; and both hole- and electron-related EPR and TL signals were made up of stable and unstable components (at room temperature).
对来自不同智能手机以及一些在线商店和供应商的大猩猩玻璃（GG）样品中的电子顺磁共振（EPR）和热释光（TL）信号进行了研究。比较了样品之间的背景信号、辐射诱导信号和紫外线诱导信号。在来自不同屏幕的样品之间以及同一手机同一屏幕表面上，均观察到EPR和TL信号（形状和强度）存在显著差异。EPR和TL背景信号似乎都归因于手机制造过程中的紫外线暴露；一些手机屏幕边缘的EPR和TL信号较高，表明边缘处的紫外线暴露比中心处更多。同一GG样品中的EPR和TL信号似乎具有相关性：它们在相同的温度范围内衰减；并且与空穴和电子相关的EPR和TL信号均由稳定和不稳定成分组成（在室温下）。
