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Dislocation Related PL of Multi-Step Annealed Cz-Si Samples

Journal Solid State Phenomena (Volumes 108 - 109)
Volume Gettering and Defect Engineering in Semiconductor Technology XI
Edited by B. Pichaud, A. Claverie, D. Alquier, H. Richter and M. Kittler
Pages 773-778
DOI 10.4028/www.scientific.net/SSP.108-109.773
Citation E.A. Steinman et al., 2005, Solid State Phenomena, 108-109, 773
Online since December, 2005
Authors E.A. Steinman, A.N. Tereshchenko, V.I. Vdovin, Andrzej Misiuk
Keywords Dislocations, Gettering, Impurity, PL, Silicon
Abstract

The samples of Cz Si were subjected to multi-step annealing at different temperatures. After high temperature consequent steps the dislocation related spectra (DRL) were detected from the samples. The main feature of the DRL spectra was the very narrow low energy bands D1/D2, which are unusual for Cz Si. TEM analysis shown that the only candidates for DRL spectra are dislocation loops, punched out from precipitates. To explain the absence of influence of oxygen it was assumed that the distribution of interstitial oxygen is nonuniform in such samples and has some depletion regions in the vicinity of precipitates.

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