Synthesis & understanding of phase transitions & optoelectronic properties in functional nanomaterials
(Sub) atomic-scale manipulation and characterization of ferroelectric phenomena in perovskite oxides using electron microscopy and phase transition | Synthesis of nanoparticles and colloid through chemical route, pulsed laser ablation and milling route | Structural characterization using transmission electron microscopy, X-Ray diffraction and Raman spectroscopy | Thin film fabrication using spray coating, inkjet printing and spin coating | Current-Voltage-Temperature characterization of thin films | Fabrication of inorganic solar cells, organic-inorganic hybrid solar cells and estimating the efficiency | Optical characterization (UV, PL, FTIR) of colloids and thin films.
Experimental Skills
Synthesis and Fabrication techniques
Ball milling: KC0 (cryomilling) and pulverized milling: P5, P7 | InkJet Printing: MicroFab Jetlab | Spray Coating: Nordson | Spin Coater | Pulsed laser deposition | Arc Melting.
Characterization techniques
TEM: Bright-field & dark-field imaging, HRTEM, EDS, SAD | STEM: HRSTEM, DPC, iDPC | TEM & STEM EELS, EDS | In-situ heating & electric field in TEM & STEM | SEM: secondary electron imaging, back scattered imaging, Inlens mode, EDS | XRD | UV-Vis spectroscopy | Photoluminescence | Dektak profilometer | AFM: tapping mode scan | I-V characterization: two probe & four probe methods, van der Pauw.
Ability to extract data and analysis
Raman Spectroscopy | FTIR | XPS | EQE | ICP data analysis.
Software Skills
Digital Micrograph | X’Pert HighScore | Matlab: Advanced Image Processing | Microsoft Office: Word, Power Point, Excel | Origin Pro.