Synthesis of high crystallization β-Ga2O3 micron rods with tunable morphologies and intensive blue emission via solution route

Monoclinic gallium oxide (β-Ga2O3) micron rods have been synthesized via solution route, and the products were characterized by FE-SEM, TEM, HR-TEM, and XRD. Compared with β-Ga2O3 powder, PL spectrum of β-Ga2O3 micron rods exhibits more intensive blue emission and a salient blue shift. The β-Ga2O3 micron rods should be of particular interest for optoelectronic devices application. The possible formation mechanism was discussed and the synthesis route should also be applicable to synthesize other metal oxides micron rods.