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Visible interference effects in silicon caused by high-current--high-dose implantation

Journal Article · · Appl. Phys. Lett.; (United States)
DOI:https://doi.org/10.1063/1.88887· OSTI ID:7351526
Silicon samples with visible color bands have been produced by high beam currents and have been studied using optical reflectivity, Rutherford backscattering (channeling), and transmission electron microscopy. Backscattering shows crystalline or near-crystalline layers at the surface, buried amorphous layers centered at the damage range, and a deeper damage peak. Complex interference spectra are successfully analyzed for two sets of fringes: a visible set primarily associated with the crystalline layer of index of refraction n/sub x/ at the surface and an infrared set primarily associated with the buried amorphous layer (n/sub a/>n/sub x/). Interband transitions in the ultraviolet confirm the existence of crystalline layers at the surface. The deeper damage peak is composed of small dislocations as shown by electron microscopy. (AIP)
Research Organization:
Bell Laboratories, Murray Hill, New Jersey 07974
OSTI ID:
7351526
Journal Information:
Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 29:10; ISSN APPLA
Country of Publication:
United States
Language:
English