High hole and electron mobilities using Strained Si / Strained Ge heterostructures

نویسنده

  • Chris W. Leitz
چکیده

PMOS and NMOS mobility characteristics of the dual channel (strained Si/strained Ge) heterostructure have been reviewed. It is shown that the dual channel heterostructure can provide substantially enhanced mobilities for both electrons and holes. However, germanium interdiffusion from the germanium rich buried layer into the underlying buffer layer could potentially reduce the hole mobility enhancements.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

MOSFET Channel Engineering using Strained Si, SiGe, and Ge Channels

Biaxial tensile strained Si grown on SiGe virtual substrates will be incorporated into future generations of CMOS technology due to the lack of performance increase with scaling. Compressively strained Ge-rich alloys with high hole mobilities can also be grown on relaxed SiGe. We review progress in strained Si and dual channel heterostructures, and also introduce high hole mobility digital allo...

متن کامل

High Mobility Strained Si/SiGe Heterostructure MOSFETs

Strained Siand SiGe-based heterostructure MOSFETs grown on relaxed SiGe virtual substrates exhibit dramatic electron and hole mobility enhancements over bulk Si, making them promising candidates for next generation CMOS devices. The most heavily investigated heterostructures consist of a single strained Si layer grown upon a relaxed SiGe substrate. While this configuration offers significant pe...

متن کامل

Modulation doping in Ge(x)Si(1 - x)/Si strained layer heterostructures: Effects of alloy layer thickness, doping setback, and cladding layer dopant concentration

Selectively doped Gex Si , _ x lSi strained layer heterostructures have been grown in a single quantum well configuration on (OOl)-Si substrate using molecular beam epitaxy. The modulation doping effect has been observed inp-type structures only; although both nandp-type double heterostructures were grown. We have investigated the effects of: (i) alloy layer thickness (well width), (ii) doping ...

متن کامل

Extraction of large valence-band energy offsets and comparison to theoretical values for strained-Si/strained- Ge type-II heterostructures on relaxed SiGe substrates

Metal-oxide-semiconductor capacitors were fabricated on type-II staggered gap strained-Si/strained-Ge heterostructures epitaxially grown on relaxed SiGe substrates of various Ge fractions. Quasistatic quantummechanical capacitance-voltage (CV) simulations were fit to experimental CV measurements to extract the band alignment of the strained layers. The valence-band offset of the strained-Si/str...

متن کامل

Hole Mobility in Strained Ge / Relaxed SiGe with a High - k / Metal Gate Stack

The need for high speed and density in the modem semiconductor industry requires new channel materials and techniques for improved carrier transport and continuous scaling of the device dimensions. As a material for enhanced hole transport strained-Ge is implemented in this work. High-k dielectric and metal gate stack is used for improved electrostatic control, as an alternative to the unstable...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2003