4 papers · 1 filter
Unveiling the structural, chemical state, and optical band-gap evolution of Ta-doped epitaxial SrTiO3 thin films using first-principles calculations and spectroscopic ellipsometry
Shammi Kumar, Raja Sen, Mamta Arya +2
In this report, the optical properties of Ta doped SrTiO3 (STO) due to its potential in transparent conducting oxides (TCOs) is explored by a combination of theoretical studies bas…
Occurrence of the collective Ziman limit of heat transport in cubic semiconductors: scattering channels and size effects
Jelena Sjakste, Maxime Markov, Raja Sen +2
In this work, we discuss the possibility of reaching the Ziman conditions for collective heat transport in cubic bulk semiconductors, such as Si, Ge, AlAs and AlP. In natural and e…
Role of Dimensionality and Size in Controlloing the Drag Seebeck Coefficient of Doped Silicon Nanostructures: A Fundamental Understanding
Raja Sen, Nathalie Vast, Jelena Sjakste
In this theoretical study, we examine the influence of dimensionality, size reduction, and heat-transport direction on the phonon-drag contribution to the Seebeck coefficient of si…
Pressure Induced Thermodynamically Stable and Mechanically Robust Li-rich Unknown Li-Sn Compounds: A Step Towards Improvement of Li-Sn Batteries
Raja Sen, Priya Johari
Volume expansion and elastic softening of Sn anode on lithiation result in mechanical degradation and pulverization of Sn, affecting the overall performance of Li-Sn batteries. It…