Yang Li-Li, Wan Wen-Jiao, Li Jin-Qing, Meng Jian-Xin
Department of Chemistry, Jinan University, Guangzhou 510632, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2011 Jan;31(1):43-6.
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).
