Positionally defined, binary semiconductor nanoparticles synthesized by scanning probe block copolymer lithography

Louise R. Giam, Shu He, Noah E. Horwitz, Daniel J. Eichelsdoerfer, Jinan Chai, Zijian Zheng, Dongwoo Kim, Wooyoung Shim, Chad A Mirkin*

*Corresponding author for this work

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

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 Cd 2+, which is defined by the feature volume. When they are subsequently reacted in H 2S 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.

Original languageEnglish (US)
Pages (from-to)1022-1025
Number of pages4
JournalNano Letters
Volume12
Issue number2
DOIs
StatePublished - Feb 8 2012

Keywords

  • Scanning probe
  • block copolymer
  • cadmium sulfide nanoparticles
  • lithography
  • semiconductor

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering

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  • Cite this

    Giam, L. R., He, S., Horwitz, N. E., Eichelsdoerfer, D. J., Chai, J., Zheng, Z., Kim, D., Shim, W., & Mirkin, C. A. (2012). Positionally defined, binary semiconductor nanoparticles synthesized by scanning probe block copolymer lithography. Nano Letters, 12(2), 1022-1025. https://doi.org/10.1021/nl204233r