تحديد ارتفاع حاجز شوتكي لديود ملدن و غير ملدن Ni – n-GaAs بوساطة المميزات السعوية (C-V)‎

الملخص EN

In this research ,the characteristics C-V were studied for annealed and non- annealed Schottky diodes of Ni-n-GaAs type at 300K temperature before and after irradiation by different laser energies.

Donor impurities concentration in the diode substrate was calculated and it ranged between (0,63 ×1015 -0,65×1015) cm-3 in non-annealed diodes.

While it was ranged between(1.08×1015-0.94×1015 )cm-3 in annealed diodes.

The capacity increased by the increase of the laser doses in the non-annealed diodes while it decreased in annealed diodes.

In addition to, Schottky barrier height in non-annealed diodes was calculated and it ranged between( 0.708- 0.688)V.

While in annealed diodes, it ranged between (0.79 -0.87)V.

Finally this height was calculated according to Schottky theory and the results were very close.