Digital alloy-grown InAs/GaAs short-period superlattices with tunable band gaps for short-wavelength infrared photodetection

B Guo, B Liang, J Zheng, S Ahmed, S Krishna… - ACS …, 2024‏ - ACS Publications
The InGaAs lattice-matched to InP has been widely deployed as the absorption material in
short-wavelength infrared photodetection applications such as imaging and optical …

Atomistic Transport Modeling, Design Principles, and Empirical Rules for Low-Noise III-V Digital-Alloy Avalanche Photodiodes

SZ Ahmed, Y Tan, J Zheng, JC Campbell… - Physical Review Applied, 2022‏ - APS
A series of III-V ternary and quarternary digital alloy avalanche photodiodes have recently
been seen to exhibit very low excess noise. Using band inversion of an environment …

A physics based multiscale compact model of pin avalanche photodiodes

SZ Ahmed, S Ganguly, Y Yuan, J Zheng… - Journal of Lightwave …, 2021‏ - opg.optica.org
III-V material based digital alloy Avalanche Photodiodes (APDs) have recently been found to
exhibit low noise similar to Silicon APDs. The III-V materials can be chosen to operate at any …

Minimum-energy digital computing with steep subthreshold swing tunnel FETs

DS Truesdell, SZ Ahmed, AW Ghosh… - IEEE Journal on …, 2020‏ - ieeexplore.ieee.org
Energy efficiency in digital circuits is limited by the subthreshold swing (SS), which defines
how abruptly a transistor switches between its ON and OFF-states. The SS is particularly …

A comprehensive analysis of Auger generation impacted planar Tunnel FETs

SZ Ahmed, DS Truesdell, Y Tan, BH Calhoun… - Solid-State …, 2020‏ - Elsevier
Abstract Tunnel Field Effect Transistors (TFETs) are known to be compromised by higher
order processes that downgrade their performance compared to ballistic projections. Using …

Biaxial strain modulated valence-band engineering in III-V digital alloys

SZ Ahmed, Y Tan, J Zheng, JC Campbell, AW Ghosh - Physical Review B, 2022‏ - APS
A series of III-V digital alloy avalanche photodiodes have been recently seen to exhibit very
low excess noise. These alloys have low hole ionization coefficients due to enhanced …

A More Accurate Analytical DC Compact Modeling of Tunneling Field-Effect Transistor for SPICE Simulation

S Go, WJ Lee, S Cho - Journal of Semiconductor Technology and …, 2019‏ - dbpia.co.kr
In this work, an analytical DC compact model of tunneling field-effect transistor (TFET) with
higher accuracy is presented. Non-local band-to-band tunneling current equation in the …

Drain current modelling of planar TFETs

US Shikha, RK James - Materials Today: Proceedings, 2021‏ - Elsevier
Abstract Tunnel Field Effect Transistors are one of the most promising ultra-low power steep
slope device. Extremely low OFF current, sub-threshold swing which is less than …