| dc.creator |
BİLİR, Gokhan |
|
| dc.date |
2017-08-15T00:00:00Z |
|
| dc.date.accessioned |
2019-07-09T12:00:26Z |
|
| dc.date.available |
2019-07-09T12:00:26Z |
|
| dc.identifier |
http://dergipark.org.tr/sdufenbed/issue/34610/382219 |
|
| dc.identifier |
10.19113/sdufbed.28398 |
|
| dc.identifier.uri |
http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/46752 |
|
| dc.description |
The different amount of rare earth ions doped zinc tungsten tellurite glasses with the compositions (70-x-y-z)TeO2 – 20ZnO – 10WO3 – xEr2O3 – yTm2O3 – zYb2O3 (x = 0.3, 0.5; y = 0.3, 0.5; z = 3) have been synthesized using melt quenching technique. Blue, green, red and infrared luminescence via energy transfer and frequency upconversion mechanisms in Tm3+/Er3+/Yb3+ triply-doped zinc tungsten tellurite glasses were investigated under single 975 nm diode laser excitation. Intense blue (Tm3+: 1D2→3F4, 1G4→3H6; 477 nm), green (2H11/2, 4S3/2→4I15/2 ; 525 nm and 549 nm), red (Er3+: 4F9/2→4I15/2, Tm3+: 1G4→3F4; 659 nm) and infrared (Tm3+: 1G4→3H5, 3H4→3H6 ; 807 nm) emissions were observed simultaneously at room temperature. Intense white light emission from all samples was observed with CCT values higher than 6500 K and CRI values lower than 80. The CIE coordinates of the emitted white light were found to shift to yellowish-greenish region with increasing pumping power. The possible energy transfer and upconversion mechanisms are discussed and plausible explanations are made. |
|
| dc.format |
application/pdf |
|
| dc.publisher |
Süleyman Demirel University |
|
| dc.publisher |
Süleyman Demirel Üniversitesi |
|
| dc.relation |
http://dergipark.org.tr/download/article-file/408860 |
|
| dc.source |
Volume: 21, Issue: 3
786-790 |
en-US |
| dc.source |
1308-6529 |
|
| dc.subject |
Tellurite glasses,White light; Rare earth ions; Upconversion |
|
| dc.title |
Intense Upconverted White Light Emission from Tm3+ - Er3+ - Yb3+ Doped Zinc Tungsten Tellurite Glasses |
en-US |
| dc.type |
info:eu-repo/semantics/article |
|