Basic ammonothermal growth of Gallium Nitride–State of the art, challenges, perspectives

M Zajac, R Kucharski, K Grabianska… - Progress in Crystal …, 2018 - Elsevier
Recent progress in ammonothermal technology of bulk GaN growth in basic environment is
presented and discussed in this paper. This method enables growth of two-inch in diameter …

Chemistry of ammonothermal synthesis

TMM Richter, R Niewa - Inorganics, 2014 - mdpi.com
Ammonothermal synthesis is a method for synthesis and crystal growth suitable for a large
range of chemically different materials, such as nitrides (eg, GaN, AlN), amides (eg, LiNH2 …

Correlation between dislocations and leakage current of pn diodes on a free-standing GaN substrate

S Usami, Y Ando, A Tanaka, K Nagamatsu… - Applied Physics …, 2018 - pubs.aip.org
Dislocations that cause a reverse leakage current in vertical pn diodes on a GaN free-
standing substrate were investigated. Under a high reverse bias, dot-like leakage spots …

Vertical GaN p–n diode with deeply etched mesa and the capability of avalanche breakdown

H Fukushima, S Usami, M Ogura, Y Ando… - Applied Physics …, 2019 - iopscience.iop.org
A simple structure with high breakdown voltage and a low leakage current of a vertical GaN
p–n diode on a GaN free-standing substrate is demonstrated. We describe a vertical p–n …

Point defects in group III nitrides: A comparative first-principles study

Y Gao, D Sun, X Jiang, J Zhao - Journal of Applied Physics, 2019 - pubs.aip.org
One of the main challenges in the development of wide bandgap semiconductor devices is
to understand the behavior of defects and avoid their harm. Using density-functional theory …

Deeply and vertically etched butte structure of vertical GaN p–n diode with avalanche capability

H Fukushima, S Usami, M Ogura, Y Ando… - Japanese Journal of …, 2019 - iopscience.iop.org
A vertical p–n diode with a simple edge termination structure on a GaN free-standing
substrate is demonstrated. The edge of this device is terminated simply by etching a drift …

Ammonothermal synthesis of nitrides: recent developments and future perspectives

J Häusler, W Schnick - Chemistry–A European Journal, 2018 - Wiley Online Library
Nitrides represent an intriguing class of functional materials with a broad range of
application fields. Within the past decade, the ammonothermal method became increasingly …

High quality, low cost ammonothermal bulk GaN substrates

D Ehrentraut, RT Pakalapati, DS Kamber… - Japanese Journal of …, 2013 - iopscience.iop.org
Ammonothermal GaN growth using a novel apparatus has been performed on c-plane, m-
plane, and semipolar seed crystals with diameters between 5 mm and 2 in. to thicknesses of …

Ammonothermal Synthesis of Earth‐Abundant Nitride Semiconductors ZnSiN2 and ZnGeN2 and Dissolution Monitoring by In Situ X‐ray Imaging

J Häusler, S Schimmel, P Wellmann… - … –A European Journal, 2017 - Wiley Online Library
In this contribution, first synthesis of semiconducting ZnSiN2 and ZnGeN2 from solution is
reported with supercritical ammonia as solvent and KNH2 as ammonobasic mineralizer. The …

Ammonothermal GaN substrates: Growth accomplishments and applications

R Dwiliński, R Doradziński, J Garczyński… - … status solidi (a), 2011 - Wiley Online Library
We are presenting some physical and chemical basis of ammonothermal method of bulk
gallium nitride (GaN) synthesis in ammonobasic route. The substrates of polar, non‐polar …