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Standard Test Method for Separating an Ionizing Radiation-Induced MOSFET Threshold Voltage Shift Into Components Due to Oxide Trapped Holes and Interface States Using the Subthreshold Current-Voltage Characteristics
Automaticky preložený názov:
Štandardná skúšobná metóda pre separáciu s ionizujúceho žiarenia vyvolanej MOSFET Threshold Voltage Shift na zložky kvôli oxidu Trapped otvory a rozhranie štátmi pomocou subthreshold prúd - napätie Charakteristika
NORMA vydaná dňa 1.5.2010
Označenie normy: ASTM F996-10
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.5.2010
Kód tovaru: NS-57209
Počet strán: 7
Približná hmotnosť: 21 g (0.05 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
c/v characteristics, current-voltage characteristics, interface states, ionizing radiation, MOSFET, oxide-trapped holes, threshold voltage shift, trapped holes, Current measurement--semiconductors, Electrical conductors (semiconductors), Gate and field oxides, Ionizing radiation, MOSFETs, Radiation exposure--electronic components/devices, Silicon semiconductors, Threshold voltage
Significance and Use | ||||||||
The electrical properties of gate and field oxides are altered by ionizing radiation. The method for determining the dose delivered by the source irradiation is discussed in Practices E666, E668, E1249, and Guide E1894. The time dependent and dose rate effects of the ionizing radiation can be determined by comparing pre- and post-irradiation voltage shifts, ΔVot and ΔVit. This test method provides a means for evaluation of the ionizing radiation response of MOSFETs and isolation parasitic MOSFETs. The measured voltage shifts, ΔVot and ΔVit, can provide a measure of the effectiveness of processing variations on the ionizing radiation response. This technique can be used to monitor the total-dose response of a process technology. |
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1. Scope | ||||||||
1.1 This test method covers the use of the subthreshold charge separation technique for analysis of ionizing radiation degradation of a gate dielectric in a metal-oxide-semiconductor-field-effect transistor (MOSFET) and an isolation dielectric in a parasitic MOSFET. , , The subthreshold technique is used to separate the ionizing radiation-induced inversion voltage shift, ΔVINV into voltage shifts due to oxide trapped charge, ΔVot and interface traps, ΔVit. This technique uses the pre- and post-irradiation drain to source current versus gate voltage characteristics in the MOSFET subthreshold region. 1.2 Procedures are given for measuring the MOSFET subthreshold current-voltage characteristics and for the calculation of results. 1.3 The application of this test method requires the MOSFET to have a substrate (body) contact. 1.4 Both pre- and post-irradiation MOSFET subthreshold source or drain curves must follow an exponential dependence on gate voltage for a minimum of two decades of current. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
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2. Referenced Documents | ||||||||
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