Luminescence Enhancement of CdTe Nanostructures in LaF3:Ce/CdTe Nanocomposites
Journal Article
·
· Journal of Applied Physics, 108(10):207-213
Radiation detection demands new scintillators with high quantum efficiency, high energy resolution and short luminescence lifetimes. Nanocomposites consisting of quantum dots and Ce3+ doped nanophosphors may be able to meet these requirements. Here we report the luminescence of LaF3:Ce/CdTe nanocomposites which were synthesized by a wet chemistry method. In LaF3:Ce/CdTe nanocomposites the CdTe quantum dots are converted into nanowires, while in LaF3/CdTe nanocomposites no such conversion is observed. The CdTe luminescence in LaF3:Ce/CdTe nanocomposites is enhanced about 5 times, while in LaF3/CdTe nanocomposites no enhancement was observed. Energy transfer, light-re-absorption and surface passivation are likely the reasons for the luminescence enhancement.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1001133
- Report Number(s):
- PNNL-SA-74942; 30431; KP1704020
- Journal Information:
- Journal of Applied Physics, 108(10):207-213, Journal Name: Journal of Applied Physics, 108(10):207-213 Journal Issue: 10 Vol. 108; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
Similar Records
X-ray luminescence of CdTe quantum dots in LaF{sub 3}:Ce/CdTe nanocomposites
X-Ray Luminescence of LaF3:Tb3+ and LaF3:Ce3+, Tb3+ Water Soluble Nanoparticles
Formation and Luminescence Phenomena of LaF3:Ce3+ Nanoparticles and Lanthanide-Organic Compounds in Dimethyl Sulfoxide
Journal Article
·
Sun Jan 01 23:00:00 EST 2012
· Applied Physics Letters
·
OSTI ID:22025391
X-Ray Luminescence of LaF3:Tb3+ and LaF3:Ce3+, Tb3+ Water Soluble Nanoparticles
Journal Article
·
Sat Mar 15 00:00:00 EDT 2008
· Journal of Applied Physics, 103(6):Art. No. 063105
·
OSTI ID:927969
Formation and Luminescence Phenomena of LaF3:Ce3+ Nanoparticles and Lanthanide-Organic Compounds in Dimethyl Sulfoxide
Journal Article
·
Wed Jan 20 23:00:00 EST 2010
· Journal of Physical Chemistry C, 114(2):826-831
·
OSTI ID:974947