Positionally Defined, Binary Semiconductor Nanoparticles Synthesized by Scanning Probe Block Copolymer Lithography

被引：34

作者：

Giam, Louise R. ^{[1
,3
]}

He, Shu ^{[2
,3
]}

Horwitz, Noah E. ^{[2
]}

Eichelsdoerfer, Daniel J. ^{[2
,3
]}

Chai, Jinan ^{[2
,3
]}

Zheng, Zijian ^{[2
,3
]}

Kim, Dongwoo ^{[2
,3
]}

Shim, Wooyoung ^{[1
,3
]}

Mirkin, Chad A. ^{[1
,2
,3
]}

机构：

[1] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

[2] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

[3] Northwestern Univ, Int Inst Nanotechnol, Evanston, IL 60208 USA

来源：

NANO LETTERS | 2012年 / 12卷 / 02期

关键词：

Scanning probe; lithography; block copolymer; semiconductor; cadmium sulfide nanoparticles; DIP-PEN NANOLITHOGRAPHY; QUANTUM DOTS; PHOTOLUMINESCENCE; NANOSTRUCTURES; NANOCRYSTAL; INK; SUPERLATTICES; MICROSCOPY; ARRAYS; FILMS;

D O I：

10.1021/nl204233r

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the first method for synthesizing binary semiconductor materials by scanning probe block copolymer lithography (SPBCL) in desired locations on a surface. In this work, we utilize SPBCL to create polymer features containing a desired amount of Cd2+, which is defined by the feature volume. When they are subsequently reacted in H2S in the vapor phase, a single CdS nanoparticle is formed in each block copolymer (BCP) feature. The CdS nanoparticles were shown to be both crystalline and luminescent. Importantly, the CdS nanoparticle sizes can be tuned since their diameters depend on the volume of the originally deposited BCP feature.

引用

页码：1022 / 1025

页数：4

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