Green Upconversion Emission from Er3+ Ion Doped into Sol-Gel Silica Glasses under Red Light (647.1 nm) Excitation
- 1 March 1995
- journal article
- Published by American Chemical Society (ACS) in The Journal of Physical Chemistry
- Vol. 99 (13), 4447-4450
- https://doi.org/10.1021/j100013a013