Bishnoi, Swati and Khichar, Naveen and Das, Rupali and Kumar, Vineet and Kotnala, R. K. and Chawla, Santa (2014) Triple excitation with dual emission in paramagnetic ZnO:Er3+ nanocrystals. RSC Advances, 4 (62). pp. 32726-32729. ISSN 2046-2069

PDF - Published Version
Download (1838Kb) | Preview


ZnO nanocrystals have been made excitable under UV as well as near and far infrared (IR) wavelengths (980 nm, 1550 nm) through doping of rare earth ion Er3+ thus making it a triple excitation nanophosphor. Whereas the visible emission under UV is broad due to intrinsic donor acceptor pair recombination, the sharp green and red emission peaks under IR are characteristic of f-f transitions of the Er3+ ion. Thus both down and upconversion fluorescence in ZnO could be realised through doping of rare earth ion Er3+ that also makes ZnO: Er3+ nanocrystals paramagnetic. To the best of our knowledge we are reporting upconversion at 1550 nm in ZnO: Er3+ for the first time.

Item Type: Article
Subjects: Chemistry
Depositing User: Dr. Rajpal Walke
Date Deposited: 23 Nov 2015 10:38
Last Modified: 23 Nov 2015 10:38

Actions (login required)

View Item View Item