Visualizing charge movement near organic heterojunctions with ultrafast time resolution via an induced Stark shift

Gary P. Wiederrecht; Noel C. Giebink; Jasmina Hranisavljevic; Daniel Rosenmann; Alex B.F. Martinson; Richard D. Schaller; Michael R. Wasielewski

doi:10.1063/1.3694287

Visualizing charge movement near organic heterojunctions with ultrafast time resolution via an induced Stark shift

Gary P. Wiederrecht^*, Noel C. Giebink, Jasmina Hranisavljevic, Daniel Rosenmann, Alex B.F. Martinson, Richard D. Schaller, Michael R. Wasielewski

^*Corresponding author for this work

Chemistry

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

3 Scopus citations

Abstract

We introduce a method to monitor photoinduced charge separation processes in organic donor-acceptor heterostructures. This approach utilizes a transient Stark shift of the exciton band of a molecular J-aggregate, deposited as a thin probe layer adjacent to the organic heterojunction. The high temporal dynamic range of this approach, from 100 femtoseconds to nanoseconds and longer, enables the entire charge separation process to be followed in both space and time. More broadly, this method can be applied to characterize photoinduced charge injection and separation processes in different materials and architectures, where sub-picosecond time resolution is needed at high spatial resolution.

Original language	English (US)
Article number	113304
Journal	Applied Physics Letters
Volume	100
Issue number	11
DOIs	https://doi.org/10.1063/1.3694287
State	Published - Mar 12 2012

Funding

G.P.W., N.C.G., J.H., R.S., and D.R. acknowledge use of the Center for Nanoscale Materials for the experimental portion of this work, which is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences through Contract No. DE-AC02-06CH11357. N.C.G. and M.R.W. acknowledge support for data analysis and manuscript preparation, and A.B.F.M. acknowledges support for the atomic layer deposition, as part of the ANSER Center, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Award No. DE-SC0001059.

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3694287

Cite this

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title = "Visualizing charge movement near organic heterojunctions with ultrafast time resolution via an induced Stark shift",

abstract = "We introduce a method to monitor photoinduced charge separation processes in organic donor-acceptor heterostructures. This approach utilizes a transient Stark shift of the exciton band of a molecular J-aggregate, deposited as a thin probe layer adjacent to the organic heterojunction. The high temporal dynamic range of this approach, from 100 femtoseconds to nanoseconds and longer, enables the entire charge separation process to be followed in both space and time. More broadly, this method can be applied to characterize photoinduced charge injection and separation processes in different materials and architectures, where sub-picosecond time resolution is needed at high spatial resolution.",

author = "Wiederrecht, \{Gary P.\} and Giebink, \{Noel C.\} and Jasmina Hranisavljevic and Daniel Rosenmann and Martinson, \{Alex B.F.\} and Schaller, \{Richard D.\} and Wasielewski, \{Michael R.\}",

note = "Funding Information: G.P.W., N.C.G., J.H., R.S., and D.R. acknowledge use of the Center for Nanoscale Materials for the experimental portion of this work, which is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences through Contract No. DE-AC02-06CH11357. N.C.G. and M.R.W. acknowledge support for data analysis and manuscript preparation, and A.B.F.M. acknowledges support for the atomic layer deposition, as part of the ANSER Center, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Award No. DE-SC0001059.",

year = "2012",

month = mar,

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doi = "10.1063/1.3694287",

language = "English (US)",

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AU - Wiederrecht, Gary P.

AU - Giebink, Noel C.

AU - Hranisavljevic, Jasmina

AU - Rosenmann, Daniel

AU - Martinson, Alex B.F.

AU - Schaller, Richard D.

AU - Wasielewski, Michael R.

N1 - Funding Information: G.P.W., N.C.G., J.H., R.S., and D.R. acknowledge use of the Center for Nanoscale Materials for the experimental portion of this work, which is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences through Contract No. DE-AC02-06CH11357. N.C.G. and M.R.W. acknowledge support for data analysis and manuscript preparation, and A.B.F.M. acknowledges support for the atomic layer deposition, as part of the ANSER Center, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Award No. DE-SC0001059.

PY - 2012/3/12

Y1 - 2012/3/12

N2 - We introduce a method to monitor photoinduced charge separation processes in organic donor-acceptor heterostructures. This approach utilizes a transient Stark shift of the exciton band of a molecular J-aggregate, deposited as a thin probe layer adjacent to the organic heterojunction. The high temporal dynamic range of this approach, from 100 femtoseconds to nanoseconds and longer, enables the entire charge separation process to be followed in both space and time. More broadly, this method can be applied to characterize photoinduced charge injection and separation processes in different materials and architectures, where sub-picosecond time resolution is needed at high spatial resolution.

AB - We introduce a method to monitor photoinduced charge separation processes in organic donor-acceptor heterostructures. This approach utilizes a transient Stark shift of the exciton band of a molecular J-aggregate, deposited as a thin probe layer adjacent to the organic heterojunction. The high temporal dynamic range of this approach, from 100 femtoseconds to nanoseconds and longer, enables the entire charge separation process to be followed in both space and time. More broadly, this method can be applied to characterize photoinduced charge injection and separation processes in different materials and architectures, where sub-picosecond time resolution is needed at high spatial resolution.

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Visualizing charge movement near organic heterojunctions with ultrafast time resolution via an induced Stark shift

Abstract

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ASJC Scopus subject areas

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