STM light emission spectra of individual nanostructures of porous Si

K. Ito; S. Ohyama; Y. Uehara; S. Ushioda

doi:10.1016/0039-6028(96)00171-9

STM light emission spectra of individual nanostructures of porous Si

K. Ito, S. Ohyama, Y. Uehara, S. Ushioda

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

We have measured the visible emission spectra of individual protrusions of the porous Si (PS) surface using an STM light emission spectroscopy technique. We found that the peak energy of the emission spectrum shifts with the size of the nanoscale structures on the PS surface. The peak energy of the emission shifts from ∼1.7 to ∼2.1 eV as the diameter of the protrusion below the STM tip decreases from ∼9 to ∼3 nm. The measured peak shift with the size of the protrusion is consistent with the shift of the energy gap predicted on the basis of a quantum confinement model.

Original language	English
Pages (from-to)	423-427
Number of pages	5
Journal	Surface Science
Volume	363
Issue number	1-3
DOIs	https://doi.org/10.1016/0039-6028(96)00171-9
Publication status	Published - 1996 Aug 1
Externally published	Yes

Keywords

Clusters
Inverse photoemission spectroscopy
Luminescence
Porous solids
Scanning tunneling microscopy
Silicon
Surface structure, morphology, roughness, and typography

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/0039-6028(96)00171-9

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title = "STM light emission spectra of individual nanostructures of porous Si",

abstract = "We have measured the visible emission spectra of individual protrusions of the porous Si (PS) surface using an STM light emission spectroscopy technique. We found that the peak energy of the emission spectrum shifts with the size of the nanoscale structures on the PS surface. The peak energy of the emission shifts from ∼1.7 to ∼2.1 eV as the diameter of the protrusion below the STM tip decreases from ∼9 to ∼3 nm. The measured peak shift with the size of the protrusion is consistent with the shift of the energy gap predicted on the basis of a quantum confinement model.",

keywords = "Clusters, Inverse photoemission spectroscopy, Luminescence, Porous solids, Scanning tunneling microscopy, Silicon, Surface structure, morphology, roughness, and typography",

author = "K. Ito and S. Ohyama and Y. Uehara and S. Ushioda",

year = "1996",

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doi = "10.1016/0039-6028(96)00171-9",

language = "English",

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journal = "Surface Science",

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TY - JOUR

T1 - STM light emission spectra of individual nanostructures of porous Si

AU - Ito, K.

AU - Ohyama, S.

AU - Uehara, Y.

AU - Ushioda, S.

PY - 1996/8/1

Y1 - 1996/8/1

N2 - We have measured the visible emission spectra of individual protrusions of the porous Si (PS) surface using an STM light emission spectroscopy technique. We found that the peak energy of the emission spectrum shifts with the size of the nanoscale structures on the PS surface. The peak energy of the emission shifts from ∼1.7 to ∼2.1 eV as the diameter of the protrusion below the STM tip decreases from ∼9 to ∼3 nm. The measured peak shift with the size of the protrusion is consistent with the shift of the energy gap predicted on the basis of a quantum confinement model.

AB - We have measured the visible emission spectra of individual protrusions of the porous Si (PS) surface using an STM light emission spectroscopy technique. We found that the peak energy of the emission spectrum shifts with the size of the nanoscale structures on the PS surface. The peak energy of the emission shifts from ∼1.7 to ∼2.1 eV as the diameter of the protrusion below the STM tip decreases from ∼9 to ∼3 nm. The measured peak shift with the size of the protrusion is consistent with the shift of the energy gap predicted on the basis of a quantum confinement model.

KW - Clusters

KW - Inverse photoemission spectroscopy

KW - Luminescence

KW - Porous solids

KW - Scanning tunneling microscopy

KW - Silicon

KW - Surface structure, morphology, roughness, and typography

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U2 - 10.1016/0039-6028(96)00171-9

DO - 10.1016/0039-6028(96)00171-9

M3 - Article

AN - SCOPUS:0030205826

SN - 0039-6028

VL - 363

SP - 423

EP - 427

JO - Surface Science

JF - Surface Science

IS - 1-3

ER -

STM light emission spectra of individual nanostructures of porous Si

Abstract

Keywords

ASJC Scopus subject areas

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