Observation of Shrinking and Reformation of Shockley Stacking Faults by PL Mapping

Abstract:

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We provide evidence of shrinking of Shockley-type stacking faults (SSFs) in the SiC epitaxial layer by high temperature annealing. Photoluminescence (PL) mapping in combination with high-power laser irradiation makes it possible to investigate the formation of SSFs, which lie between a pair of partial dislocations formed by dissociation of a basal plane dislocation (BPD), without fabrication of pin diodes. Using this technique, we investigated the annealing effect on SSFs. Comparing before and after annealing at 600°C for 10 min, it became obvious that high-temperature annealing results in shrinking of the faulted area of the SSFs. The SSFs form into the same features as those before annealing when high-power laser irradiation is performed again on the same area. This result shows that the faulted area of SSFs shrinks by 600°C annealing but the nuclei of SSFs (BPDs) do not disappear.

Info:

Periodical:

Materials Science Forum (Volumes 527-529)

Edited by:

Robert P. Devaty, David J. Larkin and Stephen E. Saddow

Pages:

375-378

DOI:

10.4028/www.scientific.net/MSF.527-529.375

Citation:

T. Miyanagi et al., "Observation of Shrinking and Reformation of Shockley Stacking Faults by PL Mapping", Materials Science Forum, Vols. 527-529, pp. 375-378, 2006

Online since:

October 2006

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$35.00

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