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ASTM-F1212:1996 Edition

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F1212-89(1996)e1 Standard Test Method for Thermal Stability Testing of Gallium Arsenide Wafers

Published By Publication Date Number of Pages
ASTM 1996 4
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ASTM F1212-89-e1-Reapproved1996

Historical Standard: Standard Test Method for Thermal Stability Testing of Gallium Arsenide Wafers

ASTM F1212

Scope

1.1 This destructive test method determines whether a given sample of semi-insulating gallium arsenide (GaAs) will remain semi-insulating after exposure to the high temperatures normally required for the activation of implanted layers.

1.2 The underlying assumption is that other wafers of GaAs, whose manufacturing history was the same as the wafer from which the test sample was taken, will respond to high temperatures in like manner.

1.3 The emphasis in this test method is on simplicity and safety of apparatus, and on securing a measurement that is independent of the apparatus used.

1.4 This test method is directly applicable to uncapped and unimplanted samples of GaAs. However, users of this test method may extend it to capped or implanted samples, or both, in which case a controlled test of capped versus uncapped samples, or implanted versus unimplanted samples, is recommended.

1.5 This test method detects impurities “from the bulk” (that is, from within the GaAs wafer) that will likely affect the electrical behavior of devices formed on the surface of the wafer. This test method is not sensitive to surface impurities or process-induced impurities, except as interferences (see Interferences).

1.6

Keywords

gallium arsenide; Hal data; semi-insulating; GaAs; stability; thermal anneal

ICS Code

ICS Number Code n/a

DOI: 10.1520/F1212-89R96E01

ASTM-F1212
$35.75