Semiconductor nanocrystal assemblies:: Experimental pitfalls and a simple model of particle-particle interaction

被引：96

作者：

Döllefeld, H ^{[1
]}

Weller, H ^{[1
]}

Eychmuller, A ^{[1
]}

机构：

[1] Univ Hamburg, Inst Chem Phys, D-20146 Hamburg, Germany

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2002年 / 106卷 / 22期

关键词：

D O I：

10.1021/jp013234t

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Interactions in semiconductor nanocrystal assemblies have been studied on films of the cluster crystal compounds Cd17S4(SCH2CHOH)(26) and Cd32S14(SCH2CH(CH3)OH)(36) prepared by spin coating. Misinterpretations of observed alterations of transition energies in theses structures are avoided by the choice of an integrating sphere as the experimental setup. The resulting "real" redshift of the transition energy is explained by dipole-dipole interactions of the semiconductor nanocrystals in the films. When covalently linked, the clusters may also interact electronically.

引用

页码：5604 / 5608

页数：5

共 32 条

[1] Evolution from individual to collective electron states in a dense quantum dot ensemble [J].

Artemyev, MV ;

Bibik, AI ;

Gurinovich, LI ;

Gaponenko, SV ;

Woggon, U .

PHYSICAL REVIEW B, 1999, 60 (03) :1504-1506

[2] Spectroscopic study of electronic states in an ensemble of close-packed CdSe nanocrystals [J].

Artemyev, MV ;

Woggon, U ;

Jaschinski, H ;

Gurinovich, LI ;

Gaponenko, SV .

JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (49) :11617-11621

[3]

ATKINS PW, 1996, PHYSIKALISCHE CHEM

[4] SURFACE-POLARIZATION INSTABILITIES OF ELECTRON-HOLE PAIRS IN SEMICONDUCTOR QUANTUM DOTS [J].

BANYAI, L ;

GILLIOT, P ;

HU, YZ ;

KOCH, SW .

PHYSICAL REVIEW B, 1992, 45 (24) :14136-14142

[5] Dielectric dispersion measurements of CdSe nanocrystal colloids: Observation of a permanent dipole moment [J].

Blanton, SA ;

Leheny, RL ;

Hines, MA ;

GuyotSionnest, P .

PHYSICAL REVIEW LETTERS, 1997, 79 (05) :865-868

[6] A SIMPLE-MODEL FOR THE IONIZATION-POTENTIAL, ELECTRON-AFFINITY, AND AQUEOUS REDOX POTENTIALS OF SMALL SEMICONDUCTOR CRYSTALLITES [J].

BRUS, LE .

JOURNAL OF CHEMICAL PHYSICS, 1983, 79 (11) :5566-5571

[7] ELECTRON ELECTRON AND ELECTRON-HOLE INTERACTIONS IN SMALL SEMICONDUCTOR CRYSTALLITES - THE SIZE DEPENDENCE OF THE LOWEST EXCITED ELECTRONIC STATE [J].

BRUS, LE .

JOURNAL OF CHEMICAL PHYSICS, 1984, 80 (09) :4403-4409

[8] Nanocrystal superlattices [J].

Collier, CP ;

Vossmeyer, T ;

Heath, JR .

ANNUAL REVIEW OF PHYSICAL CHEMISTRY, 1998, 49 :371-404

[9] Reversible tuning of silver quantum dot monolayers through the metal-insulator transition [J].

Collier, CP ;

Saykally, RJ ;

Shiang, JJ ;

Henrichs, SE ;

Heath, JR .

SCIENCE, 1997, 277 (5334) :1978-1981

[10] ELECTRIC-FIELD MODULATION STUDIES OF OPTICAL-ABSORPTION IN CDSE NANOCRYSTALS - DIPOLAR CHARACTER OF THE EXCITED-STATE [J].

COLVIN, VL ;

CUNNINGHAM, KL ;

ALIVISATOS, AP .

JOURNAL OF CHEMICAL PHYSICS, 1994, 101 (08) :7122-7138

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