We have reported earlier progress in producing polycrystalline wurtzite-polymorph and photo-conductive GaN
nanofibers by electrospinning. This paper shows grain stacking during heat treatment and suggests the need to
understand nucleation and grain growth following electrospinning. Transmission Electron Microscopy (TEM) analysis of
GaN shows brittle fibers, grain stacking, and unfinished grain nucleation. X-Ray Diffraction analysis confirmed
dominant hexagonal 101-wurtzite preferential overall orientation and the incipient grains are of high crystalline quality
as seen by high resolution TEM.
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