78 citations · 103 across the 11 of their papers we have counts for
7 papers · 1 filter
Origin of shallow n-type doping in AlN and Al-rich AlGaN
Yujie Liu, Sieun Chae, Emmanouil Kioupakis
Achieving efficient n-type doping in AlN, a representative ultrawide bandgap (UWBG) semiconductor, remains a longstanding challenge that limits its application in high-power electr…
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…
Extreme-Band-Gap Semiconductors with Shallow Dopants and Mobile Carriers
Sieun Chae, Nocona Sanders, Kelsey A. Mengle +8
The conventional distinction between semiconductors and insulators is often based on the magnitude of the band gap, with materials exhibiting gaps wider than 3 eV typically classif…
Cubic BeB: A metastable -type conductive material from first principles
Xiao Zhang, Shashi Mishra, Elena R. Margine +1
Boron forms a wide variety of compounds with alkaline earth elements due to its unique bonding characteristics. Among these, binary compounds of Be and B display particularly rich…
Ab initio thermal conductivity of GeSnO alloys
Xiao Zhang, Emmanouil Kioupakis
Rutile GeO2 is an emerging ultra-wide band gap semiconductor (UWBG) that has demonstrated excellent potential for applications in power electronic devices. Alloys of rutile SnO2, a…
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…
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…