Growth and Characterization of GaAs-Based Heterostructures on Si By Mocvd
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AbstractAbstract: Several different types of GaAs-AlGaAs heterostructures were grown on Si substrates by MOCVD. The defect density in as-grown samples (~108cm−2) was similar to that of GaAs layers grown directly on Si, and the crystalline quality of the material was observed to improve slightly with post-growth annealing at 900°C. We examined the diffusion of both Si and Zn dopants during this type of annealing and found only a small amount of redistribution of both species. Laser annealing of GaAs-on-Si was also examined as a method of reducing the defect density in the material - we observed substantial improvements in surface quality, but no change in sub-surface crystalline quality.
1993 ◽
Vol 26
(4A)
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pp. A50-A52
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2014 ◽
Vol 778-780
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pp. 230-233
1994 ◽
Vol 33
(Part 2, No. 3B)
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pp. L405-L408
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1995 ◽
Vol 261
(1-2)
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pp. 317-321
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2006 ◽
Vol 249
(1-2)
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pp. 851-855
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