Vanshaj Vidyan

Investigated structure–property correlations and polarization dynamics in organic ferroelectric field-effect transistors for in-memory computing. Synthesized and formulated solution-processable ferroelectrics with varied counter-anions to systematically tune gate dipole kinetics and dielectric relaxation. Conducted end-to-end device fabrication via spin-coating and thermal evaporation inside an inert nitrogen glovebox, followed by synaptic weight modulation (potentiation/depression), retention, and endurance characterization.

Fabricated and characterized deep-ultraviolet solar-blind Schottky photodetectors based on wide-bandgap β-Ga₂O₃ thin films. Systematically optimized thin-film deposition and interface conditioning to minimize trap-assisted dark current, yielding an ultra-high photo-to-dark current contrast. Characterized film morphology, orientation, and phonon dynamics via Atomic Force Microscopy (AFM), X-ray Diffraction (XRD), and micro-Raman spectroscopy. Engineered a custom NI-LabVIEW test suite to automate multi-bias spectral responsivity logging.

Optimized optical harvesting and carrier extraction in hybrid organic/silicon solar cells. Engineered wet-chemical anisotropic KOH/IPA etching on Si (100) to form uniform pyramidal light-trapping textures, slashing front-surface reflectance from above 35% to below 9%. Formulated mixed co-solvent ratios (EG and DMSO) in PEDOT:PSS to induce polymer chain rearrangement, enhancing electrical conductivity and boosting device efficiency by over 20%.