Colloidal Nanocrystals with Molecular Metal Chalcogenide Surface Ligands

被引：938

作者：

Kovalenko, Maksym V. ^{[1
]}

Scheele, Marcus ^{[2
]}

Talapin, Dmitri V. ^{[1
,3
]}

机构：

[1] Univ Chicago, Dept Chem, Chicago, IL 60637 USA

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

[3] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA

来源：

SCIENCE | 2009年 / 324卷 / 5933期

关键词：

FIELD-EFFECT TRANSISTORS; CHARGE-TRANSPORT; CLUSTERS; SOLIDS; ASSEMBLIES; FILMS;

D O I：

10.1126/science.1170524

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Similar to the way that atoms bond to form molecules and crystalline structures, colloidal nanocrystals can be combined together to form larger assemblies. The properties of these structures are determined by the properties of individual nanocrystals and by their interactions. The insulating nature of organic ligands typically used in nanocrystal synthesis results in very poor interparticle coupling. We found that various molecular metal chalcogenide complexes can serve as convenient ligands for colloidal nanocrystals and nanowires. These ligands can be converted into semiconducting phases upon gentle heat treatment, generating inorganic nanocrystal solids. The utility of the inorganic ligands is demonstrated for model systems, including highly conductive arrays of gold nanocrystals capped with Sn2S64- ions and field-effect transistors on cadmium selenide nanocrystals.

引用

页码：1417 / 1420

页数：4

共 27 条

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