Quantitative evaluation of gallium phosphide samples prepared from rapid solid state metathesis: Solid state 31P and 69Ga magic angle spinning NMR strategies
✍ Scribed by Deanna Franke; Hellmut Eckert; Richard B. Kaner; Randoph E. Treece
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 716 KB
- Volume
- 283
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
Quantitative solid state nuclear magnetic resonance (NMR) techniques are capable of evaluating the crystalline quality of III-V semiconductor preparations. To this end, an analytical protocol consisting of magic angle spinning lineshape analysis, spin counting studies, and quadrupolar nutation NMR has been established, allowing sample comparisons on a numerical scale. This protocol is applied to a suite of gallium phosphide (GaP) samples prepared by a novel rapid solid state metathesis route from gallium halide and sodium phosphide. The results show that the quality and crystallinity of the GaP product phase depends sensitively on the gallium halide precursor used, with GaFs resulting in the highest-quality material.