Ammonothermal Crystal Growth of Indium Nitride

作者：Hertrampf Jan; Becker Peter; Widenmeyer Marc; Weidenkaff Anke; Schluecker Eberhard; Niewa Rainer^*

来源：Crystal Growth & Design, 2018, 18(4): 2365-2369.

DOI：10.1021/acs.cgd.7b01776

InN crystals with hexagonal shapes were grown from InCl3 and KNH2 in supercritical ammonia at around 280 MPa. For a successful crystal growth a molar ratio of the chloride to the amide of 1:3 was applied, thus providing an essentially ammononeutral milieu. The obtained InN crystals vary in size and aspect ratio depending on the applied furnace temperature: at 663 K hexagonal platelets up to 2 mu m in diameter, as well as rods with lengths of 4 mu m and diameters of 1 mu m were obtained; at 773 K rods grew up to 2.5 mu m in length. By combining both temperature programs, with a 10 h annealing step at both temperatures, we were able to increase the crystal size up to 5.2 mu m in length and 0.4 mu m in diameter.

• 出版日期2018-4