Silicon(001) slice was implanted by Ga+ and Sb + at 140 and 220 keV with doses of 8.2×1016 and 6.2×1016 cm-2 respectively.Then the quantum dot material was fabricated with subsequently once annealing and twice annealing treatment.The implanted subsequent annealed samples were observed using a transmission electron microscope(TEM) and a high resolution transmission electron microscope(HRTEM).The TEM images show that the crystal lattice of the dots and the repairing of the damaged substrate of the samples which experience twice annealing are better than that of the samples which experience the once annealing.
关键词
量子点离子注入透射电子显微镜(TEM)二次退火
Keywords
quantum dotsions implantationtransmission electron microscopy(TEM)twice annealing