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Proceedings Paper

Colloidal quantum dots as optoelectronic elements
Author(s): 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
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Paper Abstract

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.

Paper Details

Date Published: 28 February 2006
PDF: 13 pages
Proc. SPIE 6127, Quantum Sensing and Nanophotonic Devices III, 61270L (28 February 2006); doi: 10.1117/12.641067
Show Author Affiliations
Dinakar Ramadurai, Univ. of Illinois at Chicago (United States)
Yang Li, Univ. of Illinois at Chicago (United States)
Takayuki Yamanaka, Univ. of Illinois at Chicago (United States)
Dwarakanath Geerpuram, Univ. of Illinois at Chicago (United States)
Viswanath Sankar, Univ. of Illinois at Chicago (United States)
Milana Vasudev, Univ. of Illinois at Chicago (United States)
Dimitri Alexson, Univ. of Illinois at Chicago (United States)
Peng Shi, Univ. of Illinois at Chicago (United States)
Mitra Dutta, Univ. of Illinois at Chicago (United States)
Michael A. Stroscio, Univ. of Illinois at Chicago (United States)
Tijana Rajh, Argonne National Lab. (United States)
Zoran Saponjic, Argonne National Lab. (United States)
Nicholas Kotov, Univ. of Michigan, Ann Arbor (United States)
Zhiyong Tang, Univ. of Michigan, Ann Arbor (United States)
Song Xu, Molecular Imaging, Inc. (United States)


Published in SPIE Proceedings Vol. 6127:
Quantum Sensing and Nanophotonic Devices III
Manijeh Razeghi; Gail J. Brown, Editor(s)

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