Please use this identifier to cite or link to this item:
http://repo.lib.jfn.ac.lk/ujrr/handle/123456789/2453
Title: | Photoluminescence Studies of Stillwellite type Eu, Ho, Er co-doped Lanthanum Borosilicate Up Conversion Luminescent Materials for Solar Energy Applications |
Authors: | Karthikeyani, A. Sathriya, N. Anbukumaran, K. |
Keywords: | Upconversion materials;Solar energy application;quantum efficiency enhancement;stillwellite type materials;photon up-conversion;luminescent materials;blue shift |
Issue Date: | 2019 |
Publisher: | University of Jaffna |
Abstract: | In the present study, a new luminescent stillwellite type lanthanum borosilicate (doped with Eu3+ and co- doped with either Er3+/Ho3+ or both) up-conversion materials were synthesized and characterized by photoluminescence studies. Using Eu3+ luminescence as a local probe, the microscopic symmetry around it in the host matrix is studied. Two cationic sites were found to exist. Co-doping of Er3+ and /Ho3+, has altered the PL line spectrum of Eu3+ into a broader one which could be explained based on carrier energy transfer model and this broadening is a proof for the existence of up conversion property in the new materials synthesized. Further, a blue shift is observed in the PL emission spectra by progressively increasing the excitation wavelength from 240 nm to 270 nm which, also infers the presence of successful up-conversion property in the newly developed material |
URI: | http://repo.lib.jfn.ac.lk/ujrr/handle/123456789/2453 |
ISSN: | 0925-3467 |
Appears in Collections: | AMCEHA 2019 |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Photoluminescence Studies of Stillwellite type Eu, Ho, Er co-doped.pdf | 589.29 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.