Strain-Dependent Photoluminescence Behavior of CdSe/CdS Nanocrystals with Spherical, Linear, and Branched Topologies

被引：126

作者：

Choi, Charina L. ^{[1
,2
]}

Koski, Kristie J. ^{[1
,2
]}

Sivasankar, Sanjeevi ^{[3
]}

Alivisatos, A. Paul ^{[1
,2
]}

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Sci Mat, Berkeley, CA 94720 USA

[3] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

来源：

NANO LETTERS | 2009年 / 9卷 / 10期

基金：

美国能源部;

关键词：

COLLOIDAL NANOCRYSTALS; HIGH-PRESSURE; CORE/SHELL NANOCRYSTALS; DEFORMATION POTENTIALS; SEEDED GROWTH; SEMICONDUCTORS; DIAMOND;

D O I：

10.1021/nl9017572

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The photoluminescence of CdSe/Cds core/shall quantum dots, nanorods, and tetrapods is investigated as a function of applied hydorstatic and non-hydrostatic pressure. The optoelectronic properties of all three nanocrystal morphologies are affected by strain. Further more, it is demonstrated that the unique morphology of seeded tetrapods is highly sensitive to non-isotropic stress environments. Seeded tetrapods can thereby serve as an optical strain gauge, capable of measuring forces on the order of nanonewtons. We anticipate that a nanocrystal strain gauge with optical readout will be useful for applications including sensitive optomechanical devices and biological force investigations.

引用

页码：3544 / 3549

页数：6

共 30 条

[1]

Adachi S., 2004, HDB PHYS PROPERTIES, V3

[2] Semiconductor clusters, nanocrystals, and quantum dots [J].

Alivisatos, AP .

SCIENCE, 1996, 271 (5251) :933-937

[3] The use of nanocrystals in biological detection [J].

Alivisatos, P .

NATURE BIOTECHNOLOGY, 2004, 22 (01) :47-52

[4] Synthesis and micrometer-scale assembly of colloidal CdSe/CdS nanorods prepared by a seeded growth approach [J].

Carbone, Luigi ;

Nobile, Concetta ;

De Giorgi, Milena ;

Sala, Fabio Delia ;

Morello, Giovanni ;

Pompa, Pierpaolo ;

Hytch, Martin ;

Snoeck, Etienne ;

Fiore, Angela ;

Franchini, Isabella R. ;

Nadasan, Monica ;

Silvestre, Albert F. ;

Chiodo, Letizia ;

Kudera, Stefan ;

Cingolani, Roberto ;

Krahne, Roman ;

Manna, Liberato .

NANO LETTERS, 2007, 7 (10) :2942-2950

[5] Integration of colloidal nanocrystals into lithographically patterned devices [J].

Cui, Y ;

Bjork, MT ;

Liddle, JA ;

Sonnichsen, C ;

Boussert, B ;

Alivisatos, AP .

NANO LETTERS, 2004, 4 (06) :1093-1098

[6] Force-induced activation of covalent bonds in mechanoresponsive polymeric materials [J].

Davis, Douglas A. ;

Hamilton, Andrew ;

Yang, Jinglei ;

Cremar, Lee D. ;

Van Gough, Dara ;

Potisek, Stephanie L. ;

Ong, Mitchell T. ;

Braun, Paul V. ;

Martinez, Todd J. ;

White, Scott R. ;

Moore, Jeffrey S. ;

Sottos, Nancy R. .

NATURE, 2009, 459 (7243) :68-72

[7] Mechanical and electrical properties of CdTe tetrapods studied by atomic force microscopy [J].

Fang, Liang ;

Park, Jeong Young ;

Cui, Yi ;

Alivisatos, Paul ;

Shcrier, Joshua ;

Lee, Byounghak ;

Wang, Lin-Wang ;

Salmeron, Miquel .

JOURNAL OF CHEMICAL PHYSICS, 2007, 127 (18)

[8] Tetrapod-Shaped Colloidal Nanocrystals of II-VI Semiconductors Prepared by Seeded Growth [J].

Fiore, Angela ;

Mastria, Rosanna ;

Lupo, Maria Grazia ;

Lanzani, Guglielmo ;

Giannini, Cinzia ;

Carlino, Elvio ;

Morello, Giovanni ;

De Giorgi, Milena ;

Li, Yanqin ;

Cingolani, Roberto ;

Manna, Liberato .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (06) :2274-2282

[9] Anomalous photoluminescence in CdSe quantum-dot solids at high pressure due to nonuniform stress [J].

Grant, Christian D. ;

Crowhurst, Jonathan C. ;

Hamel, Sebastien ;

Williamson, Andrew J. ;

Zaitseva, Natalia .

SMALL, 2008, 4 (06) :788-794

[10] DENSITY-MEDIATED TRANSPORT AND THE GLASS-TRANSITION - HIGH-PRESSURE VISCOSITY MEASUREMENTS IN THE DIAMOND-ANVIL CELL [J].

HERBST, CA ;

COOK, RL ;

KING, HE .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1994, 172 :265-271

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