27 citations · 54 across the 10 of their papers we have counts for
10 papers
In-situ real-time evolution of intrinsic stresses and microstructure during growth of cathodic arc deposited (Al,Ti)N coatings
Sanjay Nayak, Tun-Wei Hsu, Lina Rogström +8
The residual stress plays a vital role in determination of the device performance that uses thin films coating and thus the accurate determination of stress and its optimization wi…
Microscopic Origin of Structural Disorder in -NbN: Correlation of Superconductivity and Electronic Structure
Shailesh Kalal, Sanjay Nayak, Akhil Tayal +3
Rock-salt type niobium nitride (-NbN) is a well-known superconductor having superconducting transition temperature (Tc) 18\,K and a large superconducting gap …
Gallium-Boron-Phosphide (GaBP): A New III-V Semiconductor for photovoltaics
Upendra Kumar, Sanjay Nayak, Soubhik Chakrabarty +2
Using machine learning (ML) approach, we unearthed a new III-V semiconducting material having an optimal bandgap for high efficient photovoltaics with the chemical composition of G…
Error Minimization in Predicting Accurate Adsorption Energies Using Machine Learning
Sanjay Nayak, Satadeep Bhattacharjee, Jung-Hae Choi +1
Finding the "ideal" catalyst is a matter of great interest in the communities of chemists and material scientists, partly because of its wide spectrum of industrial applications. I…
Spectroscopic signatures of native charge compensation in Mg doped GaN Nanorods
Rajendra Kumar, Sanjay Nayak, S. M. Shivaprasad
We study the native charge compensation effect in Mg doped GaN nanorods (NRs), grown by Plasma Assisted Molecular Beam Epitaxy (PAMBE), using Raman, photoluminescence (PL) and X-ra…
Vacancy defect in bulk and at (100) surface of GaN: A combined first-principles theoretical and experimental analysis
Sanjay Nayak, Mit H. Naik, Manish Jain +2
We determine atomic and electronic structure, formation energy, stability and magnetic properties of native point defects, such as Gallium (Ga) and Nitrogen (N) vacancies in bulk a…
Enhanced radial growth of Mg doped GaN nanorods: A combined experiment and first-principles based analysis
Sanjay Nayak, Rajendra Kumar, Nagaraja KK +1
We discuss the microstructural origin of enhanced radial growth in magnesium (Mg) doped gallium nitride (GaN) nanorods (NRs) using electron microscopy and \textit{first-principles}…
On the origin of Blue Luminescence in Mg doped GaN
Sanjay Nayak, Mukul Gupta, Umesh V. Waghmare +1
We uncover the origin of blue luminescence (BL) peak in Mg doped GaN thin film using a combination of experimental X-ray absorption near edge spectroscopy (XANES), first-principles…
Edge enhanced growth induced shape transition in the formation of GaN Nanowall Network
Sanjay Nayak, Rajendra Kumar, S. M. Shivaprasad
We address the mechanism of early stages of growth and shape transition of the unique nanowall network (NwN) nanostructure of GaN by experimentally monitoring its controlled growth…
GaN Nanowall Network: A new possible route to obtain efficient p-GaN and enhanced light extraction
Sanjay Kumar Nayak, Mukul Gupta, S. M. Shivaprasad
We demonstrate that GaN formed in a Nanowall Network (NwN) morphology can overcome fundamental limitations in optoelectronic devices, and enable high light extraction and effective…