The Synthesis of Crystalline Gallium Nitride Using Solid-State Metathhsis Reactions at High Pressures
The Synthesis of Crystalline Gallium Nitride Using Solid-State Metathhsis Reactions at High Pressures
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高压固态复分解反应合成晶体氮化镓
DOI：
10.4131/jshpreview.7.1040
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
R. Kaner
中科院分区：
文献类型：
--
作者：
C. H. Wallace;J. O'loughlin;L. Rao;Sang;J. Heath;M. Nicol;R. Kaner
固态复分解（交换）反应提供了一种在常温条件下快速生产高质量耐火材料的方法。利用Bridgman顶砧和环式装置对压力下的固态分解反应进行了研究，导致了GaN， TaN和CrN的体合成，这些在环境压力/温度条件下是无法获得的。例如，在4的压力下，通过碘化镓（III）和氮化锂的反应，可以快速（< 1秒）合成高质量的晶体氮化镓。5 GPa，并被录取。这些化合物的表征包括粉末x射线衍射、热重分析、差示扫描量热法、能量色散光谱和扫描电子显微镜。在压力下通过复分解反应制备的单相氮化镓在蓝/紫外区表现出显著的光致发光强度。
Solid-state metathesis (exchange) reactions provide a rapid method to produce high quality refractory materials under ambient conditions. An investigation into solid-state metathesis reactions under pressure using Bridgman anvils and a girdle-type apparatus has led to the bulk synthesis of GaN, TaN and CrN, which are inaccessible under ambient pressure/temperature conditions. For example, high quality, crystalline gallium nitride can be rapidly (< 1 sec) synthesized from the reaction of gallium (III) iodide and lithium nitride confined at a pressure of 4. 5 GPa and initiated. Characterization of these compounds includes powder X-ray diffraction, thermogravimetric analysis, differential scanning calorimetry, energy dispersive spectroscopy and scanning electron microscopy. The single-phase gallium nitride made by metathesis reactions under pressure displays significant photoluminescence intensity in the blue/ultraviolet region.