Search results for "Compound s"
showing 5 items of 15 documents
Alkylsilyl compounds as enablers of atomic layer deposition: analysis of (Et3Si)3As through the GaAs process
2016
A new chemistry has been developed to deposit GaAs, the quintessential compound semiconductor. The ALD process is based on a dechlorosilylation reaction between GaCl3 and (Et3Si)3As. Characteristic ALD growth was demonstrated, indicating good applicability of the alkylsilyl arsenide precursor. ALD of GaAs produced uniform, amorphous and stoichiometric films with low impurity content. This was done with saturating growth rates and an easily controlled film thickness. Crystallization was achieved by annealing. Even though the growth rate strongly decreased with increasing deposition temperature, good quality film growth was demonstrated at 175 to 200 °C, indicating the presence of an ALD wind…
Progress in the Development of CdTe and CdZnTe Semiconductor Radiation Detectors for Astrophysical and Medical Applications
2009
Over the last decade, cadmium telluride (CdTe) and cadmium zinc telluride (CdZnTe) wide band gap semiconductors have attracted increasing interest as X-ray and gamma ray detectors. Among the traditional high performance spectrometers based on silicon (Si) and germanium (Ge), CdTe and CdZnTe detectors show high detection efficiency and good room temperature performance and are well suited for the development of compact and reliable detection systems. In this paper, we review the current status of research in the development of CdTe and CdZnTe detectors by a comprehensive survey on the material properties, the device characteristics, the different techniques for improving the overall detector…
Sakārtojuma saiklis “un” emuāros
2016
Emuāru rakstīšana pēdējo gadu laikā guvusi plašu popularitāti dažādās jomās un nozarēs. Lai gan valodas īpatnības emuāros nav plaši pētītas, valoda emuāros tiek raksturota kā nepastarpināta un tās lietojums tiek salīdzināts ar runas pierakstīšanu, kad domu plūdumu ir grūti sadalīt teikumos. Līdz ar to šī darba mērķis ir izzināt un analizēt sakārtojuma saikļa “un” lietojumu saliktos sakārtotos teikumos emuāros, kas ir uzskatīti par jaunu, vēl attīstības procesā esošu, žanru. Iegūtie rezultāti liecina, ka, lai gan tiek izšķirti astoņi sakārtojuma saikļa “ un” papildus nozīmju veidi, lielākajā daļā teikumu sakārtojuma saiklis “un” tiek lietots ar tā pamatnozīmi.