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Photoluminescence spectroscopy and lifetime measurements from self-assembled semiconductor-metal nanoparticle hybrid arrays
被引:27
作者:
Haridas, M.
[1
]
Basu, J. K.
[1
]
Gosztola, D. J.
[2
]
Wiederrecht, G. P.
[2
]
机构:
[1] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India
[2] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA
关键词:
cadmium compounds;
gold;
II-VI semiconductors;
nanoparticles;
photoluminescence;
polymer blends;
self-assembly;
semiconductor quantum dots;
thin films;
wide band gap semiconductors;
QUANTUM DOTS;
CDSE;
EMISSION;
D O I:
10.1063/1.3483162
中图分类号:
O59 [应用物理学];
学科分类号:
摘要:
We present results of photoluminescence spectroscopy and lifetime measurements on thin film hybrid arrays of semiconductor quantum dots and metal nanoparticles embedded in a block copolymer template. The intensity of emission as well as the measured lifetime would be controlled by varying the volume fraction and location of gold nanoparticles in the matrix. We demonstrate the ability to both enhance and quench the luminescence in the hybrids as compared to the quantum dot array films while simultaneously engineering large reduction in luminescence lifetime with incorporation of gold nanoparticles. (C) 2010 American Institute of Physics. [doi:10.1063/1.3483162]
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