Synthesis of Wurtzite-Type InN Crystals by Low-Temperature Nitridation of LiInO2 Using NaNH2 Flux
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- 作者：Akira Miura ; Takahiro Takei ; Nobuhiro Kumada
- 刊名：Crystal Growth & Design
- 出版年：2012
- 出版时间：September 5, 2012
- 年：2012
- 卷：12
- 期：9
- 页码：4545-4547
- 全文大小：199K
- 年卷期：v.12,no.9(September 5, 2012)
- ISSN：1528-7505
文摘
Nitridation of oxides above 500 掳C is a conventional route for the synthesis of various oxynitrides and nitrides. However, this technique has the disadvantages of requiring a high temperature to break the strong metal and oxygen bonds and of low utilization efficiency of nitrogen sources such as toxic ammonia. Here, we show a simple low-temperature synthesis of InN nanocrystals via the nitridation of LiInO2 by NaNH2 flux at 240 掳C in a Teflon-lined autoclave. The NaNH2 flux converted irregular-shaped LiInO2 powder to 50鈥?00 nm InN nanocrystals with well-developed facets. The product crystallized in the hexagonal wurtzite structure with lattice parameters of a = 3.545 脜 and c = 5.717 脜. Lithium in the starting oxide was found to be essential for this low-temperature nitridation.