6 papers
Electron correlation in semiconductors and insulators via symbolic regression
Nick Pant, Viet-Anh Ha, Donghwan Kim +1
Predicting quasiparticle energies in materials requires expensive numerical evaluations of the electron self-energy. This limits calculations to ordered systems with small unit cel…
First-principles predictions of carrier mobility with record accuracy using GW perturbation theory
Nick Pant, Sabyasachi Tiwari, Steven G. Louie +2
Accurate prediction of carrier mobility is critical for the discovery and design of next-generation electronic materials. Despite sustained progress, state-of-the-art ab initio met…
Efficient First-Principles Framework for Overdamped Phonon Dynamics and Anharmonic Electron-Phonon Coupling in Superionic Materials
Yuxuan Wang, Marios Zacharias, Xiao Zhang +4
Relying on the anharmonic special displacement method, we introduce an ab initio quasistatic polymorphous framework to describe local disorder, anharmonicity, and electron-phonon c…
Electron mobility in AlN from first principles
Amanda Wang, Nick Pant, Woncheol Lee +3
Aluminum nitride is a promising ultra-wide band gap semiconductor for optoelectronics and power electronics. However, its practical applications have been limited by challenges wit…
Enhancing light emission with electric fields in polar nitride semiconductors
Nick Pant, Rob Armitage, Emmanouil Kioupakis
Significant effort has been devoted to mitigating polarization fields in nitride LEDs, as these fields are traditionally viewed as detrimental to light emission, particularly for r…
Impact of Quantum Well Thickness on Efficiency Loss in InGaN/GaN LEDs: Challenges for Thin-Well Designs
Xuefeng Li, Nick Pant, Sheikh Ifatur Rahman +4
We investigate the impact of quantum well (QW) thickness on efficiency loss in c-plane InGaN/GaN LEDs using a small-signal electroluminescence (SSEL) technique. Multiple mechanisms…