Electron and Hole Transfer from Indium Phosphide Quantum Dots

J. L. Blackburn; D. C. Selmarten; R. J. Ellingson; M. Jones; O. Micic; A. J. Norik

doi:10.1021/jp046781y

Electron and Hole Transfer from Indium Phosphide Quantum Dots

J. L. Blackburn, D. C. Selmarten, R. J. Ellingson, M. Jones, O. Micic, A. J. Norik

National Renewable Energy Laboratory

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

124 Scopus Citations

Abstract

Electron- and hole-transfer reactions are studied in colloidal InP quantum dots (QDs). Photoluminescence quenching and time-resolved transient absorption (TA) measurements are utilized to examine hole transfer from photoexcited InP QDs to the hole acceptor N,N,N′,N′-tetramethyl-p-phenylenediamine (TMPD) and electron transfer to nanocrystalline titanium dioxide (TiO ₂) films. Core-confined holes are effectively quenched by TMPD, resulting in a new ∼4-ps component in the TA decay. It is found that electron transfer to TiO ₂ is primarily mediated through surface-localized states on the InP QDs.

Original language	American English
Pages (from-to)	2625-2631
Number of pages	7
Journal	Journal of Physical Chemistry B
Volume	109
Issue number	7
DOIs	https://doi.org/10.1021/jp046781y https://doi.org/10.1021/jp046781y
State	Published - 2005

NREL Publication Number

NREL/JA-590-37329

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title = "Electron and Hole Transfer from Indium Phosphide Quantum Dots",

abstract = "Electron- and hole-transfer reactions are studied in colloidal InP quantum dots (QDs). Photoluminescence quenching and time-resolved transient absorption (TA) measurements are utilized to examine hole transfer from photoexcited InP QDs to the hole acceptor N,N,N′,N′-tetramethyl-p-phenylenediamine (TMPD) and electron transfer to nanocrystalline titanium dioxide (TiO 2) films. Core-confined holes are effectively quenched by TMPD, resulting in a new ∼4-ps component in the TA decay. It is found that electron transfer to TiO 2 is primarily mediated through surface-localized states on the InP QDs.",

author = "Blackburn, {J. L.} and Selmarten, {D. C.} and Ellingson, {R. J.} and M. Jones and O. Micic and Norik, {A. J.}",

year = "2005",

doi = "10.1021/jp046781y",

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journal = "Journal of Physical Chemistry B",

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T1 - Electron and Hole Transfer from Indium Phosphide Quantum Dots

AU - Blackburn, J. L.

AU - Selmarten, D. C.

AU - Ellingson, R. J.

AU - Jones, M.

AU - Micic, O.

AU - Norik, A. J.

PY - 2005

Y1 - 2005

N2 - Electron- and hole-transfer reactions are studied in colloidal InP quantum dots (QDs). Photoluminescence quenching and time-resolved transient absorption (TA) measurements are utilized to examine hole transfer from photoexcited InP QDs to the hole acceptor N,N,N′,N′-tetramethyl-p-phenylenediamine (TMPD) and electron transfer to nanocrystalline titanium dioxide (TiO 2) films. Core-confined holes are effectively quenched by TMPD, resulting in a new ∼4-ps component in the TA decay. It is found that electron transfer to TiO 2 is primarily mediated through surface-localized states on the InP QDs.

AB - Electron- and hole-transfer reactions are studied in colloidal InP quantum dots (QDs). Photoluminescence quenching and time-resolved transient absorption (TA) measurements are utilized to examine hole transfer from photoexcited InP QDs to the hole acceptor N,N,N′,N′-tetramethyl-p-phenylenediamine (TMPD) and electron transfer to nanocrystalline titanium dioxide (TiO 2) films. Core-confined holes are effectively quenched by TMPD, resulting in a new ∼4-ps component in the TA decay. It is found that electron transfer to TiO 2 is primarily mediated through surface-localized states on the InP QDs.

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DO - 10.1021/jp046781y

M3 - Article

AN - SCOPUS:14544299571

SN - 1520-6106

VL - 109

SP - 2625

EP - 2631

JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 7

ER -

Electron and Hole Transfer from Indium Phosphide Quantum Dots

Abstract

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