Download e-book for kindle: Optical Characterization of Epitaxial Semiconductor Layers by Günther Bauer

By Günther Bauer

ISBN-10: 3642796788

ISBN-13: 9783642796784

ISBN-10: 364279680X

ISBN-13: 9783642796807

The final decade has witnessed an explosive improvement within the development of expitaxial layers and constructions with atomic-scale dimensions. This development has created new calls for for the characterization of these stuctures. numerous equipment were sophisticated and new ones built with the most emphasis on non-destructive in-situ characterization. between these, equipment which depend on the interplay of electromagnetic radiation with subject are rather important. during this publication normal tools equivalent to far-infrared spectroscopy, ellipsometry, Raman scattering, and high-resolution X-ray diffraction are awarded, in addition to new complicated options which offer the potential of greater in-situ characterization of epitaxial buildings (such as mirrored image anistropy spectroscopy, infrared reflection-absorption spectroscopy, second-harmonic new release, and others). This quantity is meant for researchers operating at universities or in undefined, in addition to for graduate scholars who're attracted to the characterization of semiconductor layers and for these coming into this box. It summarizes the present-day wisdom and stories the most recent advancements vital for destiny ex-situ and in-situ studies.

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Extra resources for Optical Characterization of Epitaxial Semiconductor Layers

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This must be also the reason why in Fig. 27 the data for in-situ and ex-situ measurements are significantly different. Similar observations have been made for PH 3 or tertiary butylphosphine (H 2 P(CH 3h) . In contrast, the decomposition of alkyls with no metal-hydrogen bonds like Ga(CH3h or corresponding ethyls seem to occur via homogeneous reactions because no surface influence was detected. 2 Decomposition Products. In understanding and modelling the growth process not only the decomposition of the precursors but also the 40 2.

44]. 30]. The silane concentration is plotted for different susceptor temperatures as a function of height above the susceptor. 30] a experiment; b theory Fig. 26. 2 0~3~0~O~~~~~~~~~~ 11~ OO b Substrate temperature (K) Fig. 27. Thermal decomposition of AsH 3 and PH3 obtained in-situ (shaded areas which include error bars) and ex-situ by CARS. 45] . The calculated results shown also in Fig. 26 compare quite well with the experiment. This agreement proves that such measurements can be used to test the quality and validity of growth models in a more direct manner than growth rate data.

2 Gas Phase Diagnostics: Transport 21 by a prism arrangement from a single laser (He-Ne) intersect at an angle e, which is easily predetermined, and the Doppler frequency is then given by: 2vn . 13) where v is the velocity component perpendicular to the interference fringes. This symmetrical arrangement also accounts for the following simple interpretation: the particle with velocity v passing through the interference fringes will strongly emit light at each interference maximum. 13). The experimental arrangement includes a Bragg cell to shift the Doppler frequency by a known amount for the detection of small velocities with higher precision.

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Optical Characterization of Epitaxial Semiconductor Layers by Günther Bauer

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