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Optical Characterization of Individual Nanostructures by STM Light Emission

Published online by Cambridge University Press:  10 February 2011

S. Ushioda
S. Ushioda*
Affiliation:
Research Institute of Electrical Communication Tohoku University, Sendai 980–77, Japan and CREST-Japan Science and Technology Corporation
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Abstract

Visible light is emitted when electrons (holes) are injected into a sample from the tip of the scanning tunneling microscope (STM). By analyzing the spectra of the emitted light, one can not only determine the surface geometry by usual STM imaging, but also learn the electronic and optical properties of specific individual nanostructures. This technique has been applied to investigate the electronic transitions of individual protrusions of porous Si and semiconductor quantum wells of AlGaAs/GaAs. The usefulness, limitations, and future expectations of this novel technique are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 588: Symposium P – Optical Microstructural Characterization of Semiconductors , 1999 , 25
Copyright
Copyright © Materials Research Society 2000

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