A Study of the Luminescence of Organic-Sensitised Europium Ions in Lanthanum Trifluoride Nanocrystals Towards Optical Amplification

europium;Lanthanum Trifluoride;nanocrystals;amplification;thenoyltrifluroacetone;ligand sensetise;TTA

King, Gavin Gordon George ; Longdell, Jevon Joseph

University of Otago

关键词: europium;    Lanthanum Trifluoride;    nanocrystals;    amplification;    thenoyltrifluroacetone;    ligand sensetise;    TTA;   

Others  :  https://ourarchive.otago.ac.nz/bitstream/10523/4444/1/KingGavinGG2013MSc.pdf

美国|英语

来源: Otago University Research Archive

【 摘 要 】

The luminescence of europium ions in lanthanum trifluoride nanocrystals are measured, with and without thenoyltrifluroacetate (TTA) sensitisers. It is found that the luminescence from the Eu³⁺ is constant in intensity and frequency without TTA; with the TTA the intensity is seen to degrade significantly with exposure to pump light. A number of possibilities for this are explored.It was intended to include the nanocrystals in polymer films to measure the gain possible; this is explored theoretically. The losses that might be expected using scattering theory are calculated, and using this the gain requirements for nett optical transparency are calculated.