한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제40권11호
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  • Pages.1058-1061
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  • 2003
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  • 1229-7801(pISSN)
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  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
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Synthesis and Characterization of Gallium Nitride Powders from a Gallium(III) Sulfate Salt in Flowing Ammonia

  • Jung, Woo-Sik (School of Chemical Engineering and Technology, College of Engineering, Yeungnam University)
  • 발행 : 2003.11.01
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초록

Gallium Nitride (GaN) powders were synthesized by calcining a gallium(III) sulfate salt in flowing ammonia in the temperature range 500-1100$^{\circ}C$. The process of conversion of the salt to GaN was monitored by X-Ray Diffraction (XRD). The salt decomposed to ${\gamma}$-Ga$_2$O$_3$ and then converted to GaN without ${\gamma}$-${\beta}$Ga$_2$O$_3$ phase transition. Variations in XRD patterns and weight loss of samples with temperature indicate that the conversion of ${\gamma}$-Ga$_2$O$_3$ to GaN does not proceed through Ga$_2$O but stepwise via amorphous gallium oxynitride (GaO$\_$x/N$\_$y/) as intermediates. Room-temperature photoluminescence spectra of GaN powders obtained showed the emission peak at 363 nm and no yellow band.

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참고문헌

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