Evolution of photoluminescence life-times distribution in Si-QD/SiO2 multilayer films Xinzhan Wang, Yumei Liu, Huina Feng, Wanlei Dai, Yanmei Xu, Wei Yu and Guangsheng Fu Eur. Phys. J. Appl. Phys., 62 3 (2013) 30303 Published online: 11 June 2013 DOI: 10.1051/epjap/2013130126