METHOD TO RESTORE THRESHOLD VOLTAGE OF MIS TRANSISTOR STRUCTURES AFTER EXPOSURE TO PLASMA TREATMENTS Russian patent published in 2011 - IPC H01L21/268 

Abstract RU 2426192 C1

FIELD: electricity.

SUBSTANCE: in the method to restore a threshold voltage of MIS-transistor structures an induced positive charge formed as a result of ion-beam etching process during formation of structure metal layers, is neutralised by photoemission of electrons during additional radiation of plates by a source of near ultraviolet with energy of quanta equal to 4.0÷6.0 eV within 15÷20 min.

EFFECT: neutralisation of induced charge in process of plasma treatments during formation of metallisation of MIS transistor structures, restoration of threshold voltages, stabilisation of charging properties and increased percentage of good items yield and higher reliability.

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RU 2 426 192 C1

Authors

Borodkin Igor' Ivanovich

Asessorov Valerij Viktorovich

Kozhevnikov Vladimir Andreevich

Dates

2011-08-10Published

2010-02-03Filed