Abstract
High quality nanoscale, phase-pure hexagonal gallium nitride (GaN) crystallites have been synthesized using the thermally induced explosion of the molecular precursor (Et3N)Ga(N3)3. The method allows the control of the particle size from 2 to 24 nm. X-ray diffraction and Rietveld simulations revealed a platelet-like shape of the larger particles in contrast to the rather spherical smaller crystallites. An increasing blue-shift of the high energy luminescence with decreasing crystal size was found (up to 4.4 eV at 5 K). A preliminary analysis of the surface chemistry of has been carried out based on silylation and deuteration experiments and IR spectroscopy, indicating hydrophilic, O-H and N-H terminated particles.
| Original language | English |
|---|---|
| Pages (from-to) | 15-20 |
| Number of pages | 6 |
| Journal | Materials Research Society Symposium - Proceedings |
| Volume | 501 |
| State | Published - 1998 |
| Externally published | Yes |
| Event | Proceedings of the 1997 MRS Fall Symposium - Boston, MA, USA Duration: 30 Nov 1997 → 3 Dec 1997 |