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The design of Reach-Through Avalanche Photodiodes (RT-APD) for medium energy X-ray detection requires a previous optimization to guarantee elevated gain at the required operation conditions. A simple methodology to estimate the gain in RT-APD devices by using TCAD numerical simulations is proposed in this work. This technique offers the possibility to predict the gain in RT-APDs as a function of the...
Reach-Through Avalanche Photodiodes (RT-APD) for medium energy X-ray detection, with 300 μm thick active region, have been devised, fabricated and characterised at the IMB-CNM clean room. The RT-APD structure and principle of operation are detailed in this paper, together with the main modifications introduced over its general design in order to improve the device performance. The optimisation of...
Total Ionising Dose (TID) effects are the most important effects of ionising radiation in MOS devices. Among others, TID cause charge trapping in the oxide and in the oxide-semiconductor interface. In this work we develop physical simulation models of charge trapping TID effects in MOS capacitors, in order to have a calculation model for postirradiation experiments. Simulations are made using the...
In this work, C-V characteristics of MOS capacitors fabricated by depositing SiO2 by plasma-enhanced chemical-vapor-deposition at low temperature (300 °C) on an N-type GaN epitaxial layer using different technological procedures have been performed to analyze the quality and reliability of the resultant SiO2/GaN interface in MOS structures. C-V measures at different temperatures have been also performed...
This paper is focused on the optimization design of 150 V power LDMOS transistors with the purpose of being integrated in a new generation of Smart-Power technology based upon a 0.18μm SOI-CMOS technology. Different structure parameters, such as the STI length, the N-well doping profile and the relative position of the N-well mask to the STI are analyzed in terms of voltage capability, specific on-state...
The oxidative dehydrogenation of butane on a V/MgO doped catalyst has been studied under anaerobic conditions. Fe, Co and Mo were used as dopants with atomic ratios to V of 1:20 and 1:100. Under these conditions, the oxygen from the catalyst lattice is consumed by the reaction and the degree of solid oxidation changes during the process.A kinetic model is applied in which the relation between the...
Cervical cancer represents the second most common malignant neoplasia in women world-wide. In Mexico, cervical cancer is the most common female malignancy. It has been recently seen an increased frequencies of micronuclei (MN) lymphocytes and cervical epithelial cells of cervical cancer patients. The aim of this hospital-based unmatched case-control study was to investigate the association between...
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