| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5398516 | Journal of Luminescence | 2016 | 5 Pages |
Abstract
LaNb2O7:Er3+,Yb3+ upconversion (UPC) phosphor nanosheets were prepared by exfoliating a KLaNb2O7:Er3+,Yb3+ layered compound. Highly crystalline nanosheets with a thickness and lateral size of 3.91 nm and approximately 300 nm, respectively, were obtained. The UPC emission intensity of the nanosheets was 7.6 times greater than that of mechanically milled particles (100-500 nm) of bulk KLaNb2O7:Er3+,Yb3+. The UPC emission intensities of the nanosheets dispersed in different solvents (H2O, D2O, CH3OH, CH2Cl2, and CCl4) were measured, and the intensities were observed to decrease in the order CCl4>CH2Cl2>D2O>CH3OH>H2O. Because of the large surface area of the nanosheets, their emission intensity was decreased depending on the solvent׳s vibrational energy.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Soichi Takasugi, Riku Iida, Koji Tomita, Michio Iwaoka, Kiyofumi Katagiri, Minoru Osada, Masato Kakihana,