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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
engineering
Macropore growth in a prepatterned p-type silicon wafer
Physica Status Solidi (A) Applications and Materials Science, Volume 204, No. 5, Year 2007
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Description
The formation process of ordered macropores in a prepatterned p-type silicon wafer was investigated. FESEM observation focusing on the early stage of the pore growth clarified the two-step process of macropore formation, whose first step was isotropic pore expansion from prepared etch pits and the second was anisotropic growth in the depth direction. Investigation using different etch-pit patterns revealed that ordered macropores with constant diameters were obtained when the spacing of etch pits was 3-8 μm, while the spacing of 2 μm resulted in the pore-wall collapse. The diameter and the wall thickness of macropores showed a tendency to decrease with decreasing the spacing of prepared etch pits, which could not be explained only from the width of the space-charge region. The resistance distribution in a silicon substrate was proposed as a parameter playing a crucial role in determination of the wall thickness. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA.
Authors & Co-Authors
Kobayashi, K.
Japan, Kyoto
Kyoto University
Harraz, Farid A.
Egypt, Cairo
Central Metallurgical Research and Development Institute
Izuo, S.
Japan, Tokyo
Mitsubishi Electric Corporation
Sakka, Tetsuo
Japan, Kyoto
Kyoto University
Ogata, Yukio H.
Japan, Kyoto
Kyoto University
Statistics
Citations: 21
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1002/pssa.200674325
e-ISSN:
18626319