Analysis of structural disorder on Raman spectra of semiconductors

OV Rambadey, M Gupta, A Kumar… - Journal of Applied …, 2023 - pubs.aip.org
This Tutorial provides a fundamental discussion on the lattice dynamics of physical systems
introduced with disorder and, hence, the importance of Raman spectroscopy (RS) technique …

Shedding light on evolution of Raman line shape with probing laser power: Light-induced perturbation in electron–phonon coupling

OV Rambadey, K Kumar, R Nain, A Kumar… - The Journal of …, 2024 - pubs.aip.org
The laser power mediated changes in the Raman line shape have been considered in terms
of interference between discrete phonon states ρ and the electronic continuum states ϰ …

Probing the Signature of Disordering and Delocalization of Oxygen Vacancies and Anti-site Defects in Doped LaAlO3 Solid Electrolytes

M Gupta, OV Rambadey, SC Shirbhate… - The Journal of …, 2022 - ACS Publications
Correlation of structural, vibrational, and optical properties with the oxygen ion conductivity
mechanism in Ca and Mg single and co-doped LaAlO3 solid electrolytes synthesized via the …

Deconvolution of Phonon–Phonon and Electron–Phonon Interactions from Phonon Line Width in Zr-Substituted BaTiO3

K Kumar, OV Rambadey… - The Journal of Physical …, 2023 - ACS Publications
Recently, one to one correlation between the electronic disorder, ie, Urbach energy (E u)
and phonon width (Γ), has been observed [J. Phys. Chem. C 2022 126, 13946, Phys. Rev. B …

Temperature dependence of disorder sensitivity of phonon modes in finite-gap materials

OV Rambadey, K Kumar, PR Sagdeo - Physical Review B, 2024 - APS
The correlation between electronic disorder (quantified by the Urbach energy EU) and
phonon linewidth (Γ) is known to be linear. However, both parameters exhibit temperature …

[HTML][HTML] Construction of highly active photocatalytic interfaces through light field modulation and photo-deposition of Pd sites

Z Wang, M Liao, L Ling, M Zhang - Giant, 2024 - Elsevier
Anchoring noble metal sites through photo-reduction is an effective way to modulate charge
distribution on photocatalytic interfaces, thereby enhancing photocatalytic performance. The …

Utilizing rare earth titanates to improve performance of solid-state electrochromic device

R Nain, L Bansal, PR Sagdeo, R Kumar - Nano Express, 2024 - iopscience.iop.org
Exploring new materials and synthesis recipes are required to enhance the electrochromic
performance especially, when used in solid-state devices. Here, polycrystalline gadolinium …