Functional assemblies of semiconductor nanocrystal quantum dots on 1-D nanostructures using dielectrophoresis

Sohee Jeong, Hyung Cheoul Shim, Soohyun Kim, Chang-Soo Han

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Semiconductor nanocrystal quantum dots (NQDs) have attracted considerable interest for use in photovoltaics and optoelectric sensor applications. The ability to transport extracted carriers from the NQDs is essential for the development of NQD incorporated device applications. Coupling of NQDs to one-dimensional nanostructures such as single wall carbon nanotubes (SWNTs) or various types of nanowires is expected to produce a composite material which facilitates selective wavelength absorption, charge transfer to 1-D nanostructures, and efficient electron transport. We assembled prepared CdSe (core and core/shell with ZnS) semiconductor nanocrystal quantum dots on successfully aligned single walled carbon nanotubes using a new approach, dielectrophoresis (DEP), to demonstrate the efficient charge transfer. By monitoring electrical signatures from NQD decorated SWNTs when illuminated with polarized light, we were able to characterize the charge transfer from photoexcited NQDs to SWNTs.

Original languageEnglish
Title of host publicationACS National Meeting Book of Abstracts
Publication statusPublished - 2008 Dec 1
Externally publishedYes
Event236th National Meeting and Exposition of the American Chemical Society, ACS 2008 - Philadelpia, PA, United States
Duration: 2008 Aug 172008 Aug 21

Other

Other236th National Meeting and Exposition of the American Chemical Society, ACS 2008
CountryUnited States
CityPhiladelpia, PA
Period08/8/1708/8/21

Fingerprint

Electrophoresis
Nanocrystals
Semiconductor quantum dots
Nanostructures
Semiconductor materials
Carbon Nanotubes
Charge transfer
Carbon nanotubes
Carrier transport
Single-walled carbon nanotubes (SWCN)
Light polarization
Nanowires
Wavelength
Monitoring
Sensors
Composite materials

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Jeong, S., Cheoul Shim, H., Kim, S., & Han, C-S. (2008). Functional assemblies of semiconductor nanocrystal quantum dots on 1-D nanostructures using dielectrophoresis. In ACS National Meeting Book of Abstracts

Functional assemblies of semiconductor nanocrystal quantum dots on 1-D nanostructures using dielectrophoresis. / Jeong, Sohee; Cheoul Shim, Hyung; Kim, Soohyun; Han, Chang-Soo.

ACS National Meeting Book of Abstracts. 2008.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Jeong, S, Cheoul Shim, H, Kim, S & Han, C-S 2008, Functional assemblies of semiconductor nanocrystal quantum dots on 1-D nanostructures using dielectrophoresis. in ACS National Meeting Book of Abstracts. 236th National Meeting and Exposition of the American Chemical Society, ACS 2008, Philadelpia, PA, United States, 08/8/17.
Jeong S, Cheoul Shim H, Kim S, Han C-S. Functional assemblies of semiconductor nanocrystal quantum dots on 1-D nanostructures using dielectrophoresis. In ACS National Meeting Book of Abstracts. 2008
Jeong, Sohee ; Cheoul Shim, Hyung ; Kim, Soohyun ; Han, Chang-Soo. / Functional assemblies of semiconductor nanocrystal quantum dots on 1-D nanostructures using dielectrophoresis. ACS National Meeting Book of Abstracts. 2008.
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