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Materials 2010, 3(4), 2260-2345; doi:10.3390/ma3042260

Quantum Dots and Their Multimodal Applications: A Review

Department of Materials Science and Engineering, University of Florida, Gainesville, FL, USA
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Received: 5 January 2010 / Revised: 7 March 2010 / Accepted: 23 March 2010 / Published: 24 March 2010
(This article belongs to the Special Issue Luminescent Materials)

Abstract

Semiconducting quantum dots, whose particle sizes are in the nanometer range, have very unusual properties. The quantum dots have band gaps that depend in a complicated fashion upon a number of factors, described in the article. Processing-structure-properties-performance relationships are reviewed for compound semiconducting quantum dots. Various methods for synthesizing these quantum dots are discussed, as well as their resulting properties. Quantum states and confinement of their excitons may shift their optical absorption and emission energies. Such effects are important for tuning their luminescence stimulated by photons (photoluminescence) or electric field (electroluminescence). In this article, decoupling of quantum effects on excitation and emission are described, along with the use of quantum dots as sensitizers in phosphors. In addition, we reviewed the multimodal applications of quantum dots, including in electroluminescence device, solar cell and biological imaging. View Full-Text
Keywords: quantum dots; semiconducting nanomaterials; electroluminescence; photoluminescence; solar cells; biological imaging quantum dots; semiconducting nanomaterials; electroluminescence; photoluminescence; solar cells; biological imaging
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Bera, D.; Qian, L.; Tseng, T.-K.; Holloway, P.H. Quantum Dots and Their Multimodal Applications: A Review. Materials 2010, 3, 2260-2345.

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