Modeling of electron mobility in gated silicon nanowires at room temperature: Surface roughness scattering, dielectric screening, and band nonparabolicity

2007 ◽  
Vol 102 (8) ◽  
pp. 083715 ◽  
Author(s):  
Seonghoon Jin ◽  
Massimo V. Fischetti ◽  
Ting-wei Tang
Keyword(s):  
Surface Roughness ◽  
Silicon Nanowires ◽  
Electron Mobility ◽  
Room Temperature ◽  
Surface Roughness Scattering ◽  
Dielectric Screening ◽  
Temperature Surface ◽  
Band Nonparabolicity

Electron mobility in silicon nanowires using nonlinear surface roughness scattering model

2020 ◽  
Vol 59 (3) ◽  
pp. 034002 ◽  
Author(s):  
Jiahui Duan ◽  
Jinjuan Xiang ◽  
Lixing Zhou ◽  
Xiaolei Wang ◽  
Xueli Ma ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Silicon Nanowires ◽  
Electron Mobility ◽  
Scattering Model ◽  
Surface Roughness Scattering ◽  
Nonlinear Surface

Electron Mobility due to Surface Roughness Scattering in Depleted GaAs Free-Standing Thin Ribbon

2019 ◽  
Vol 954 ◽  
pp. 51-59
Author(s):  
Xi Duo Hu ◽  
Cheng Ming Li ◽  
Shao Yan Yang
Keyword(s):  
Surface Roughness ◽  
Quantum Well ◽  
Electron Mobility ◽  
Atomic Scale ◽  
Free Standing ◽  
Poisson Equations ◽  
Surface Roughness Scattering ◽  
Calculation Results ◽  
Roughness Amplitude ◽  
Dimensional Electron Gas

Abstract:Electron mobility limited by surface roughness scattering in free-standing GaAs thin ribbon with an internal parabolic quantum well caused by surface state is investigated in detail. Based on analyzing the parabolic quantum well including the energy subband level, wave function and the confined potential profile in the thin ribbon by solving Schrödinger and Poisson equations self-consistently, the electron mobility could be investigated. Conclusion indicates that remote surface roughness (RSR) of the thin ribbon will change the two dimensional electron gas (2DEG) mobility through the medium of barrier height fluctuation of the parabolic well in atomic scale. Calculation results reveal that the 2DEG mobility decreases with increasing roughness amplitude, which is characterized in terms of the surface roughness height and the roughness lateral size.

Surface roughness scattering model for arbitrarily oriented silicon nanowires

2011 ◽  
Vol 110 (8) ◽  
pp. 084514 ◽  
Author(s):  
Isabel M. Tienda-Luna ◽  
F. G. Ruiz ◽  
A. Godoy ◽  
B. Biel ◽  
F. Gámiz
Keyword(s):  
Surface Roughness ◽  
Silicon Nanowires ◽  
Scattering Model ◽  
Surface Roughness Scattering

Effect of Remote-Surface-Roughness Scattering on Electron Mobility in MOSFETs with High-k Dielectrics

2019 ◽  
Vol 33 (3) ◽  
pp. 249-255 ◽  
Author(s):  
Mamat Mamatrishat ◽  
Miyuki Kouda ◽  
Takamasa Kawanago ◽  
K. Kakushima ◽  
P. Ahmet ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Electron Mobility ◽  
Surface Roughness Scattering ◽  
High K

scholarly journals The frontiers of functionalized graphene-based nanocomposites as chemical sensors

2021 ◽  
Vol 10 (1) ◽  
pp. 330-369
Author(s):  
Norizan M. Nurazzi ◽  
Norli Abdullah ◽  
Siti Z. N. Demon ◽  
Norhana A. Halim ◽  
Ahmad F. M. Azmi ◽  
...  
Keyword(s):  
Electron Mobility ◽  
Room Temperature ◽  
Chemical Sensor ◽  
Performance Enhancement ◽  
Ballistic Transport ◽  
Quantum Hall ◽  
Single Atom ◽  
Research Progress ◽  
Thick Sheet ◽  
High Electron

Abstract Graphene is a single-atom-thick sheet of sp2 hybridized carbon atoms that are packed in a hexagonal honeycomb crystalline structure. This promising structure has endowed graphene with advantages in electrical, thermal, and mechanical properties such as room-temperature quantum Hall effect, long-range ballistic transport with around 10 times higher electron mobility than in Si and thermal conductivity in the order of 5,000 W/mK, and high electron mobility at room temperature (250,000 cm2/V s). Another promising characteristic of graphene is large surface area (2,630 m2/g) which has emerged so far with its utilization as novel electronic devices especially for ultrasensitive chemical sensor and reinforcement for the structural component applications. The application of graphene is challenged by concerns of synthesis techniques, and the modifications involved to improve the usability of graphene have attracted extensive attention. Therefore, in this review, the research progress conducted in the previous decades with graphene and its derivatives for chemical detection and the novelty in performance enhancement of the chemical sensor towards the specific gases and their mechanism have been reviewed. The challenges faced by the current graphene-based sensors along with some of the probable solutions and their future improvements are also being included.

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