Theory of plasmon-enhanced Forster energy transfer in optically excited semiconductor and metal nanoparticles

被引:224
作者
Govorov, Alexander O. [1 ]
Lee, Jaebeom
Kotov, Nicholas A.
机构
[1] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA
[2] Univ Michigan, Dept Chem Engn Biomed Engn & Mat Sci & Engn, Ann Arbor, MI 48109 USA
[3] Pusan Natl Univ, Pusan 609735, South Korea
来源
PHYSICAL REVIEW B | 2007年 / 76卷 / 12期
关键词
D O I
10.1103/PhysRevB.76.125308
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We describe the process of Forster transfer between semiconductor nanoparticles in the presence of a metal subsystem (metal nanocrystals). In the presence of metal nanocrystals, the Forster process can become faster. The enhancement of Forster transfer occurs due to the effect of plasmon-assisted amplification of electric fields inside the nanoscale assembly. Simultaneously, metal nanocrystals lead to an increase of energy losses during the Forster transfer process. We derive convenient equations for the energy transfer rates, photoluminescence intensities, and energy dissipation rates in the please of plasmon resonances. Because of strong dissipation due to the metal, an experimental observation of plasmon-enhanced Forster transfer requires special conditions. As possible experimental methods, we consider cw- and time-resolved photoluminescence studies and describe the conditions to observe plasmon-enhanced transfer. In particular, we show that the photoluminescence spectra should be carefully analyzed since the plasmon-enhanced Forster effect can appear together with strong exciton energy dissipation. Our results can be applied to a variety of experimental nanoscale systems.
引用
收藏
页数:16
相关论文
共 32 条
[1]  
Abrikosov A. A., 1965, QUANTUM FIELD THEORE, V2nd
[2]   Confinement effects in PbSe quantum wells and nanocrystals [J].
Allan, G ;
Delerue, C .
PHYSICAL REVIEW B, 2004, 70 (24) :1-9
[3]  
Bir G. L., 1975, SYMMETRY STRAIN INDU
[4]   Coherent excitation transport in metal-nanoparticle chains [J].
Citrin, DS .
NANO LETTERS, 2004, 4 (09) :1561-1565
[5]  
Davydov VY, 2002, PHYS STATUS SOLIDI B, V230, pR4, DOI 10.1002/1521-3951(200204)230:2<R4::AID-PSSB99994>3.0.CO
[6]  
2-Z
[7]  
Edwards D.F., 1985, Handbook of optical constants of solids
[8]   Band-edge exciton in quantum dots of semiconductors with a degenerate valence band: Dark and bright exciton states [J].
Efros, AL ;
Rosen, M ;
Kuno, M ;
Nirmal, M ;
Norris, DJ ;
Bawendi, M .
PHYSICAL REVIEW B, 1996, 54 (07) :4843-4856
[9]  
Forster Th., 1965, MODERN QUANTUM CHEM
[10]   Time- and polarization-resolved optical spectroscopy of colloidal CdSe nanocrystal quantum dots in high magnetic fields [J].
Furis, M ;
Hollingsworth, JA ;
Klimov, VI ;
Crooker, SA .
JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (32) :15332-15338