TY - JOUR
T1 - Luminescence enhancement of CdTe nanostructures in LaF3
T2 - Ce/CdTe nanocomposites
AU - Yao, Mingzhen
AU - Zhang, Xing
AU - Ma, Lun
AU - Chen, Wei
AU - Joly, Alan G.
AU - Huang, Jinsong
AU - Wang, Qingwu
PY - 2010/11/15
Y1 - 2010/11/15
N2 - 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 enhancement of LaF3:Ce/CdTe nanocomposites which were synthesized by a wet chemistry method. CdTe quantum dots in LaF3:Ce/CdTe nanocomposites are converted into nanowires, while in LaF3 /CdTe nanocomposites no such conversion is observed. As a result, the CdTe luminescence in LaF 3:Ce/CdTe nanocomposites is enhanced about five times, while in LaF3 /CdTe nanocomposites no enhancement was observed. Energy transfer, light reabsorption, and defect passivation are the likely reasons for the luminescence enhancement.
AB - 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 enhancement of LaF3:Ce/CdTe nanocomposites which were synthesized by a wet chemistry method. CdTe quantum dots in LaF3:Ce/CdTe nanocomposites are converted into nanowires, while in LaF3 /CdTe nanocomposites no such conversion is observed. As a result, the CdTe luminescence in LaF 3:Ce/CdTe nanocomposites is enhanced about five times, while in LaF3 /CdTe nanocomposites no enhancement was observed. Energy transfer, light reabsorption, and defect passivation are the likely reasons for the luminescence enhancement.
UR - http://www.scopus.com/inward/record.url?scp=78650291268&partnerID=8YFLogxK
U2 - 10.1063/1.3506416
DO - 10.1063/1.3506416
M3 - Article
AN - SCOPUS:78650291268
SN - 0021-8979
VL - 108
JO - Journal of Applied Physics
JF - Journal of Applied Physics
IS - 10
M1 - 103104
ER -