Direct measurement of the built-in potential in a nanoscale heterostructure

Anna M. Zaniewski; Matthias Loster; Bryce Sadtler; A. Paul Alivisatos; A. Zettl

doi:10.1103/PhysRevB.82.155311

Direct measurement of the built-in potential in a nanoscale heterostructure

Anna M. Zaniewski
, Matthias Loster
, Bryce Sadtler
, A. Paul Alivisatos
, A. Zettl

Department of Chemistry

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

7 Scopus citations

Abstract

We combine transmission electron microscopy with electrostatic force microscopy to determine the built-in potential across individual isolated Cu₂ S-CdS heterostructured nanorods. We observe a variation of potentials for different bicomponent nanorods, ranging from 100 to 920 mV with an average of 250 mV. Nanorods of a uniform composition with no heterojunction do not show a built-in potential, as expected. The results are particularly relevant for applications of colloidal nanocrystals in optoelectronic devices such as photovoltaics.

Original language	English
Article number	155311
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	82
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevB.82.155311
State	Published - Oct 13 2010

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10.1103/PhysRevB.82.155311

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abstract = "We combine transmission electron microscopy with electrostatic force microscopy to determine the built-in potential across individual isolated Cu2 S-CdS heterostructured nanorods. We observe a variation of potentials for different bicomponent nanorods, ranging from 100 to 920 mV with an average of 250 mV. Nanorods of a uniform composition with no heterojunction do not show a built-in potential, as expected. The results are particularly relevant for applications of colloidal nanocrystals in optoelectronic devices such as photovoltaics.",

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AU - Zaniewski, Anna M.

AU - Loster, Matthias

AU - Sadtler, Bryce

AU - Alivisatos, A. Paul

AU - Zettl, A.

PY - 2010/10/13

Y1 - 2010/10/13

N2 - We combine transmission electron microscopy with electrostatic force microscopy to determine the built-in potential across individual isolated Cu2 S-CdS heterostructured nanorods. We observe a variation of potentials for different bicomponent nanorods, ranging from 100 to 920 mV with an average of 250 mV. Nanorods of a uniform composition with no heterojunction do not show a built-in potential, as expected. The results are particularly relevant for applications of colloidal nanocrystals in optoelectronic devices such as photovoltaics.

AB - We combine transmission electron microscopy with electrostatic force microscopy to determine the built-in potential across individual isolated Cu2 S-CdS heterostructured nanorods. We observe a variation of potentials for different bicomponent nanorods, ranging from 100 to 920 mV with an average of 250 mV. Nanorods of a uniform composition with no heterojunction do not show a built-in potential, as expected. The results are particularly relevant for applications of colloidal nanocrystals in optoelectronic devices such as photovoltaics.

UR - https://www.scopus.com/pages/publications/78149271857

U2 - 10.1103/PhysRevB.82.155311

DO - 10.1103/PhysRevB.82.155311

M3 - Article

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JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 15

M1 - 155311

ER -

Direct measurement of the built-in potential in a nanoscale heterostructure

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