Synthesis of high-crystallinity cubic-GaN nanoparticles using the Na flux method—A proposed new usage for a belt-type high-pressure apparatus
✍ Scribed by Fumio Kawamura; Kenji Watanabe; Takashi Takeda; Takashi Taniguchi
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 924 KB
- Volume
- 321
- Category
- Article
- ISSN
- 0022-0248
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✦ Synopsis
We developed a gas-sealing technique by adopting a metal capsule in a belt-type high-pressure apparatus, which enabled a supply of high-pressure nitrogen gas of several hundred MPa.
With employing the sealing technique, cubic-GaN (c-GaN) nanoparticles were successfully synthesized using the Na flux method under nitrogen pressure above 100 MPa. A high cubic/hexagonal ratio of more than 20 can be achieved by optimizing the synthesis conditions.
An attempt was made to functionalize c-GaN by doping Eu element as a luminous origin. Cathodoluminescence and XANES study revealed that Eu can be doped into the c-GaN particles, causing them to take on the state of Eu 3 þ .