title: [Near-infrared fluorescence and energy transfer in Sr2SiO4 : Eu2+, Nd3+].
abstract: Sr2 SiO4 : Eu2+ , Nd3+ was synthesized by solid state synthesis method, and the sensitization of Nd3+ near-infrared luminescence by Eu2+ was investigated. The characteristic near-infrared luminescence of Nd2+ in Sr2 SiO4 matrix was greatly enhanced by co-doping of Eu2+. The mechanism of energy transfer from Eu2+ to Nd3+ was analyzed through investigation of fluorescence excitation and emission spectra, and fluorescence lifetime. Excited Eu2+ (II) transfers energy effectively to Nd3+ through non-radiative energy transfer process in Sr2SiO4, resulting in greatly enhanced near-infrared luminescence of Nd3+, while sensitization of Nd3+ by Eu2+ (I) was achieved by the way of Eu2+ (II).
authors.affiliation: Department of Chemistry, Jinan University, Guangzhou 510632, China. ylili@msn.com
authors.forename: Li-Li
authors.initials: LL
authors.lastname: Yang
authors.forename: Wen-Jiao
authors.initials: WJ
authors.lastname: Wan
authors.forename: Jin-Qing
authors.initials: JQ
authors.lastname: Li
authors.forename: Jian-Xin
authors.initials: JX
authors.lastname: Meng