A benzene-thermal synthetic route to nanocrystalline GaN

被引:380
作者
Xie, Y
Qian, YT
Wang, WZ
Zhang, SY
Zhang, YH
机构
[1] UNIV SCI & TECHNOL CHINA,STRUCT RES LAB,HEFEI 230026,ANHUI,PEOPLES R CHINA
[2] UNIV SCI & TECHNOL CHINA,DEPT APPL CHEM,HEFEI 230026,ANHUI,PEOPLES R CHINA
关键词
D O I
10.1126/science.272.5270.1926
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
thermal reaction of Li3N and GaCl3 in which benzene was used as the solvent under pressure has been carried out for the preparation of 30-nanometer particles of gallium nitride (GaN) at 280 degrees C. This temperature is much lower than that of traditional methods, and the yield of GaN reached 80%. The x-ray powder diffraction pattern indicated that sample was mainly hexagonal-phase GaN with a small fraction of rocksalt-phase GaN, which has a lattice constant a = 4.100 angstroms. This rocksalt structure, which had been observed previously only under high pressure (at least 37 gigapascals) was observed directly with high-resolution electron microscopy.
引用
收藏
页码:1926 / 1927
页数:2
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