Tunable white light generation from Ce3+-Tb3+-Mn2+ doped metaphosphate glass for LED and solar cell applications
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
View Archive Info| Field | Value | |
| Title |
Tunable white light generation from Ce3+-Tb3+-Mn2+ doped metaphosphate glass for LED and solar cell applications
|
|
| Creator |
Ghosh, Debarati
Biswas, K Balaji, S Annapurna, K |
|
| Subject |
Glass
|
|
| Description |
Alkali free Ba-Al metaphosphate glasses doped with Ce, Tb and Mn are prepared and their concentration is tuned to achieve white light emission for production of LEDs and luminescent concentrator for Si-PV applications. The occurrence of a redox reaction among dopant ions (Ce4+, Tb3+ -> Ce3+, Tb4+) is observed from the absorption spectra while there is no change in oxidation state of Mn2+ ions. This is confirmed from ESR studies. Emission spectra indicated effective downshifting of radiation from near visible to green and red region of the spectrum. On tuning the concentration of Tb3+ and Mn2+, bright white light emission (CIE coordinates: x=3.32, y=3.33) corresponding to CCT of 5900 K is obtained. This white light produced has been further tuned to different hues by varying the excitation wavelength of this triply doped glass. (C) 2016 Elsevier B.V. All rights reserved.
|
|
| Publisher |
Elsevier
|
|
| Date |
2017-03
|
|
| Type |
Article
PeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://cgcri.csircentral.net/4027/1/balaji.pdf
Ghosh, Debarati and Biswas, K and Balaji, S and Annapurna, K (2017) Tunable white light generation from Ce3+-Tb3+-Mn2+ doped metaphosphate glass for LED and solar cell applications. Journal of Luminescence, 183. pp. 143-149. ISSN 0022-2313 |
|
| Relation |
http://cgcri.csircentral.net/4027/
|
|