Undergraduate Research
My undergraduate thesis was on electrostatics and transport of III-V nanowire GAAFET with Prof. Khosru. We proposed a novel Gaussian Transmission profile to calculate drain current of nanoscale devices accurately without involving Buttiker probes. To control threshold voltage by the channel doping, we devised a novel axially graded nanowire channel and achieved the expected control along with better oxide-semiconductor interface and lower gate leakage.
Besides, I performed a number of project works for social and humanitarian applications.
Gate-All-Around III-V Nanowire MOSFET
Since the fabrication of first III-V Gate-All-Around MOSFET, it is under extensive research as it is the potential candidate to replace the state-of-art trigate FinFETs to continue progressive scaling. We have modeled the electrostatics and transport of this device in both ballistic and quasi-ballistic regime and proposed compact models for transmission coefficient, gate capacitance and threshold voltage. Find out more about our work here.
Performed in nanodevice research group
Gate-All-Around III-V Graded Nanowire MOSFET
We have proposed axially graded nanowire channel for improved control over threshold voltage through channel doping, better semiconductor-oxide interface and lower gate leakage. See the details here.
Performed in nanodevice research group
Surrounding Gate CNTFET
Surrounding gate CNTFET is modeled self-consistently under NEGF framework for transport analysis. Tight binding approximation and 2 subband approximation are used to model quasi 1-D CNT. (13, 0) zigzag CNT channel with 10-20nm length is found suitable for optimum on- and off-state performance. More information..
Performed in nanodevice research group
I have performed deposition (Electro-deposition, Spin coating and Dip coating) and characterization (AFM, FESEM, EDX, XRD, FTIR, UV–Vis. spectroscopy) of SWCNT, MWCNT and Fullerene thin films to examine their utility in solar cell. SWCNT thin film shows excellent absorption characteristics. More information..
Supervisor: Prof. Zahid Hasan Mahmood
Visit Intermediate Band Solar cell and Electrical and Magnetic Characterization of Metallic glasses pages to know briefly about these works.