Grain boundary etching in InP

Grain boundaries in bulk polycrystalline InP wafers are preferentially attacked by a 5 HCl:3 HNO3:4 HF etch. Canyons with depths greater than 10 μm and widths approximately 1 μm are the most common form of attack. Although the etch has no effect on simple twin boundaries, preferential attack occurs...

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Veröffentlicht in:J. Appl. Phys.; (United States) 1980-07, Vol.51 (7), p.3663-3665
Hauptverfasser: Hershenson, Larry, Zanio, Ken
Format: Artikel
Sprache:eng
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Zusammenfassung:Grain boundaries in bulk polycrystalline InP wafers are preferentially attacked by a 5 HCl:3 HNO3:4 HF etch. Canyons with depths greater than 10 μm and widths approximately 1 μm are the most common form of attack. Although the etch has no effect on simple twin boundaries, preferential attack occurs at interfaces formed by multiple twinning events.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.328148