Introduction.Currently transparent polymer materials are being increasingly widely used in optoelectronics. They are used as the basis for designing new types of integrated optics devices such as optical amplifiers, frequency selectors, three-dimensional memory devices, etc. Furthermore, study of the physical and chemical properties of polymers is of significant interest since those properties can change considerably when specific molecular compounds are added.Adding organometallic compounds to the internal free volume of samples using supercritical media, in particular supercritical carbon dioxide (supercritical CO 2 ), in order to modify their optical properties is a very advanced doping method [1,2]. A still unresolved question is how the matrix of the studied materials affects the spectral properties of the organometallics added to them.Such a property of Eu(fod) 3 molecules as the temperature dependence of the photoluminescence intensity in the range 20 o C-100 o C allows us to use doped polymers as highly sensitive temperature sensors which can be utilized, for example, in medicine. Moderate (up to 70 o C-80 o C) local heating of biological tissues by laser radiation is currently being used to correct the shape of the nasal septum, to regenerate intervertebral discs, and to treat tumors by hyperthermia. The required therapeutic effect is usually achieved when changes in the physical and chemical properties (especially mechanical, optical, and thermal properties) occur within the heated tissue interior as determined by the experimental conditions. Controlling the experimental conditions significantly reduces the likelihood of complications after laser procedures, and so monitoring such conditions has become important in both a scientific and practical sense. Designing such a sensor based on the effect of the temperature dependence of photoluminescence provides a noninvasive, rapid, highly sensitive, and optimal method for observing the conditions during laser heating of biological tissues.The aim of this work was to search for optical materials which can be used in designing a temperature sensor, and to study the effect of temperature on the photoluminescent properties of Eu(fod) 3 . In this project, we were guided by the following considerations. First of all, we need to choose a molecular compound that is photostable in the temperature range 20 o C-100 o C and has a sufficiently intense photoluminescence band in the visible region. Secondly, such a compound should be efficiently introduced into the matrices used with the help of supercritical CO 2 . At this time we have studied the process of quenching of the photoluminescence of Eu 3+ ions in several polymer materials such as polymethylmethacrylate (PMMA), polydimethylsiloxane (PDMS), and polypropylene (PP) doped with Eu(fod) 3 . For comparison, we also used the original polycrystalline Eu(fod) 3 powder in the experiments. The doping
The combined effects of N 2 -implantation at S/D extension and N 2 O oxide on 0.18 µm n-and p-Metal oxide field effect transistors (MOSFETs) were investigated. It is found that for n-channel transistors, V th roll-off and drain-induced barrier lowering (DIBL) are enhanced by nitrogen incorporation through either N 2 O oxide or N 2 -implantation. However, for p-channel transistors, opposite trends are observed for N 2 O oxide and N 2 -implantation. Finally, nitrogen incorporation by either method is found to improve the interface quality for nMOSFETs. While for p-channel transistors, best results are obtained by the combined effects of N 2 O oxide and N 2 -implantation.
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