FIELD: semiconductor engineering. SUBSTANCE: each surface of specimen is illuminated, exciton radiation spectrum in wavelength range of 482 to 496 mm is recorded, and crystallographic polarity is determined for high-resistance chips by comparing half-width of exciton radiation line of each surface; for low-resistance chips, it is determined by intensity ratio of these lines. EFFECT: facilitated procedure. 3 dwg
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Authors
Dates
1994-08-15—Published
1991-06-13—Filed