From amorphous to crystalline silicon nanoclusters: structural effects on exciton properties - Borrero-González, L. J.; Nunes, Luiz Antônio de Oliveira; Guimarães, Francisco Eduardo Gontijo; Wojcik, J.; Mascher, P.; Gennaro, A. M.; Tirado, M.; Comedi, D. (Journal of Physics: Condensed Matter, 2011)