Selective growth of PbSe on one or both tips of colloidal semiconductor nanorods

被引：205

作者：

Kudera, S

Carbone, L

Casula, MF

Cingolani, R

Falqui, A

Snoeck, E

Parak, WJ

Manna, L

机构：

[1] Univ Munich, Ctr Nanosci, Munich, Germany

[2] INFM, Natl Nanotechnol Lab, I-73100 Lecce, Italy

[3] Univ Cagliari, Dipartimento Sci Chim, I-09042 Cagliari, Italy

[4] CNRS, CEMES, F-31055 Toulouse, France

来源：

NANO LETTERS | 2005年 / 5卷 / 03期

关键词：

D O I：

10.1021/nl048060g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

PbSe nanocrystals with rock-salt structure are grown on the tips of colloidal US and CdSe nanorods. The facets of wurtzite rods provide a substrate with various degrees of reactivity for the growth of PbSe. The presence of dangling Cd bonds may explain subtle differences between nonequivalent facets resulting in the selective nucleation of PbSe only on one of the two tips of each US rod. This approach has the potential to facilitate the fabrication of heterostructures with tailored optical and electronic properties.

引用

页码：445 / 449

页数：5

共 34 条

[1] One-dimensional steeplechase for electrons realized
Björk, MT
Ohlsson, BJ
Sass, T
Persson, AI
Thelander, C
Magnusson, MH
Deppert, K
Wallenberg, LR
Samuelson, L
[J]. NANO LETTERS, 2002, 2 (02) : 87 - 89
[2] DNA-modified core-shell Ag/Au nanoparticles
Cao, YW
Jin, R
Mirkin, CA
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (32) : 7961 - 7962
[3] Growth and properties of semiconductor core/shell nanocrystals with InAs cores
Cao, YW
Banin, U
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (40) : 9692 - 9702
[4] (CdSe)ZnS core-shell quantum dots: Synthesis and characterization of a size series of highly luminescent nanocrystallites
Dabbousi, BO
RodriguezViejo, J
Mikulec, FV
Heine, JR
Mattoussi, H
Ober, R
Jensen, KF
Bawendi, MG
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (46) : 9463 - 9475
[5] Synthesis of branched 'nanotrees' by controlled seeding of multiple branching events
Dick, KA
Deppert, K
Larsson, MW
Mårtensson, T
Seifert, W
Wallenberg, LR
Samuelson, L
[J]. NATURE MATERIALS, 2004, 3 (06) : 380 - 384
[6] Duan XF, 2000, ADV MATER, V12, P298, DOI 10.1002/(SICI)1521-4095(200002)12:4<298::AID-ADMA298>3.0.CO
[7] 2-Y
[8] Semiconductor surface reconstruction: The structural chemistry of two-dimensional surface compounds
Duke, CB
[J]. CHEMICAL REVIEWS, 1996, 96 (04) : 1237 - 1259
[9] A QUANTUM-DOT QUANTUM-WELL - CDS/HGS/CDS
EYCHMULLER, A
MEWS, A
WELLER, H
[J]. CHEMICAL PHYSICS LETTERS, 1993, 208 (1-2) : 59 - 62
[10] Facile one-pot synthesis of bifunctional heterodimers of nanoparticles: A conjugate of quantum dot and magnetic nanoparticles
Gu, HW
Zheng, RK
Zhang, XX
Xu, B
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (18) : 5664 - 5665

← 1 2 3 4 →