Ammonothermal Crystallization of AlN Crystals

Motchanyy, Alexander I.; Reu, A. A.; Kovalenko, Vladimir S.; Balakirev, V. G.

doi:10.1557/proc-878-y3.3

Cited by 1 publication

(1 citation statement)

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“…In the acidic system, Y. C. Lan et al [159] produced their powder at 450 °C with an NH4Cl mineralizer. A. I. Motchanyy et al [223] reported that the nucleation results below 450 °C were the worst with the NH4Cl mineralizer. Correspondingly, 450 °C is the lowest temperature at which noticeable nucleation of AlN has been observed in the acidic environment.…”

Section: Crystallization Results Will Be Discussed In the Followingmentioning

confidence: 99%

Ammonothermal Crystal Growth of Functional Nitrides for Semiconductor Devices: Status and Potential

Wostatek,

Chirala,

Stoddard

et al. 2024

Materials

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The state-of-the-art ammonothermal method for the growth of nitrides is reviewed here, with an emphasis on binary and ternary nitrides beyond GaN. A wide range of relevant aspects are covered, from fundamental autoclave technology, to reactivity and solubility of elements, to synthesized crystalline nitride materials and their properties. Initially, the potential of emerging and novel nitrides is discussed, motivating their synthesis in single crystal form. This is followed by a summary of our current understanding of the reactivity/solubility of species and the state-of-the-art single crystal synthesis for GaN, AlN, AlGaN, BN, InN, and, more generally, ternary and higher order nitrides. Investigation of the synthesized materials is presented, with a focus on point defects (impurities, native defects including hydrogenated vacancies) based on GaN and potential pathways for their mitigation or circumvention for achieving a wide range of controllable functional and structural material properties. Lastly, recent developments in autoclave technology are reviewed, based on GaN, with a focus on advances in development of in situ technologies, including in situ temperature measurements, optical absorption via UV/Vis spectroscopy, imaging of the solution and crystals via optical (visible, X-ray), along with use of X-ray computed tomography and diffraction. While time intensive to develop, these technologies are now capable of offering unprecedented insight into the autoclave and, hence, facilitating the rapid exploration of novel nitride synthesis using the ammonothermal method.

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Section: Crystallization Results Will Be Discussed In the Followingmentioning

confidence: 99%