Using recently developed novel techniques to vary vacancy density, new excitation bands of low temperature vacancy emissions from Cu2O were observed. Among the strong excitation bands the one at 530 nm was found to change non-linearly, suggesting that its origin is from vacancy-vacancy interaction. © 1984.
Kaufman, R. G., & Hawkins, R. T. (1984). Vacancy-vacancy interaction in the excitation spectra of lattice perturbation bands in Cu2O. Journal of Luminescence, 31–32(PART 1), 509–511. https://doi.org/10.1016/0022-2313(84)90343-0