Colloidal quantum dots as optoelectronic elements

Dinakar Ramadurai, Yang Li, Takayuki Yamanaka, Dwarakanath Geerpuram, Viswanath Sankar, Milana Vasudev, Dimitri Alexson, Peng Shi, Mitra Dutta, Michael A. Stroscio, Tijana Rajh, Zoran Saponjic, Nicholas Kotov, Zhiyong Tang, Song Xu

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

7 Scopus citations


A variety of colloidal semiconductor quantum dots and related quantum-wire structures are characterized using absorption and photoluminescence measurements. The electronic properties of these structures are modeled and compared with experiment. The characterization and application of ensembles of colloidal quantum dots with molecular interconnects are considered. The chemically-directed assembly of ensembles of colloidal quantum dots with biomolecular interconnects is demonstrated with quantum dot densities in excess of 10 +17 cm -3. Non-charge transfer processes for switching based on dipole-dipole interactions - Forester interactions - are examined for colloidal quantum dots linked with biomolecules. Charge transport in biomolecules is studied using indirect-bandgap colloidal nanocrystals linked with biomolecules.

Original languageEnglish (US)
Title of host publicationQuantum Sensing and Nanophotonic Devices III
StatePublished - 2006
Externally publishedYes
EventQuantum Sensing and Nanophotonic Devices III - San Jose, CA, United States
Duration: Jan 23 2006Jan 26 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceQuantum Sensing and Nanophotonic Devices III
Country/TerritoryUnited States
CitySan Jose, CA


  • Biomolecules
  • CdSe
  • CdTe
  • Chemically-directed assembly
  • Colloidal nanoparticles
  • FRET
  • Nanowires
  • Polaron transport in DNA
  • Quantum dots

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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