کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
748666 | 1462259 | 2012 | 4 صفحه PDF | دانلود رایگان |
High quality TiO2 film grown by MOCVD on p-type GaAs with (NH4)2S treatment was obtained. The characteristics of TiO2/GaAs MOS capacitor were further improved by post-metallization annealing treatment. The leakage current densities can reach 1.7 × 10−6 and 4.5 × 10−5 A/cm2 at ±2 V (2.7 MV/cm). The equivalent oxide thickness can reach 0.53 nm for the physical thickness of 7.5 nm. The dielectric constant is 52. The lowest interface state density is 4.7 × 1011 cm−2 eV−1 derived by the high-low frequency capacitance method.
► Ultra-thin MOCVD-TiO2 was grown on p-type GaAs with (NH4)2S treatment.
► TiO2/GaAs MOS capacitor can be further improved with post-metallization annealing.
► The leakage current densities reach 1.7 × 10−6 and 4.5 × 10−5 A/cm2 at ±2 V (2.7 MV/cm).
► The lowest interface state density is 4.7 × 1011 cm−2 eV−1.
► The equivalent oxide thickness reaches 0.53 nm.
Journal: Solid-State Electronics - Volume 73, July 2012, Pages 56–59