Synthesis and photoluminescence characteristics of AlN nanocrystalline solids |
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| Authors: | Y.G. Cao X.L. Chen Y.C. Lan J.Y. Li Y.P. Xu T. Xu Y. Zhang J.K. Liang |
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| Affiliation: | (1) Institute of Physics and Centre for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, P.R. China, CN |
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| Abstract: | A new condensed form of AlN nanocrystalline solids was obtained directly from reactions of metal Al and (NH4Cl+NH4I) in liquid ammonia at 550 °C, without the subsequent consolidation process as in the conventional method. The synthesized product is a transparent bulk solid, while the constituted nanocrystals have an average size of about 18 nm and possess the same wurtzite structure as bulk AlN. (NH4Cl+NH4I), which plays a role of a catalyst in the present synthetic route, is indispensable. The photoluminescence spectrum of the AlN nanocrystalline solids shows a broad blue band centered at 400 nm. Received: 20 June 2000 / Accepted: 22 June 2000 / Published online: 9 August 2000 |
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| Keywords: | PACS: 71.55.Eq 73.61.Tm 78.55.-m |
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