title: Remarkable differences in photoluminescence properties between BaF2:Eu3+ microrods and nanorods.
abstract: The preparation process and photoluminescent properties of one-dimensional BaF2:Eu3+ nanorods (NRs) and microrods (MRs) were investigated. The results indicate that the samples were NRs with uniform diameters in the range of 30-50 nm, and lengths in the range of 1.2-3 microm when cooled to room temperature naturally. However, the samples were MRs with length of 1.5-3.0 microm and outer diameters of 200-250 nm when cooled to room temperature immediately. Furthermore, the relative intensity of 5D0 --> 7F2 depended on the two structures obtained under different temperatures. This work demonstrates that a MRs may be more favorable than NRs for photoluminescence.
authors.affiliation: College of Chemistry and Environment Science, Inner Mongolia Normal University, 81 Zhaowuda Road, Hohhot 010022, China.
authors.forename: Gejihu
authors.initials: G
authors.lastname: De
authors.forename: Bao
authors.initials: B
authors.lastname: Gui
authors.forename: Weihua
authors.initials: W
authors.lastname: Wang