Probing a molecular interface in a functioning organic diode

Young Jong Lee; So Jung Park; Andre J. Gesquiere; Paul F. Barbara

doi:10.1063/1.2006975

Probing a molecular interface in a functioning organic diode

Young Jong Lee, So Jung Park, Andre J. Gesquiere, Paul F. Barbara

Department of Chemistry & Nanoscience

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10 Scopus citations

Abstract

The effect of hole-polaron charging at a hole-injection/hole-transport interface within a functioning organic diode was investigated by single molecule spectroscopy and associated modeling. Efficient quenching of both singlet and triplet excitons by hole polarons is observed at high forward bias due to a buildup of interfacial polaron density. Additionally, for some diodes, an unexpected quenching process was observed at reverse bias, which is ascribed to hole charging of the interface due to the leakage current.

Original language	English
Article number	051906
Journal	Applied Physics Letters
Volume	87
Issue number	5
DOIs	https://doi.org/10.1063/1.2006975
State	Published - 2005

Bibliographical note

Funding Information:
This work was supported by the National Science Foundation, Welch Foundation, and Keck Foundation.

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10.1063/1.2006975

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abstract = "The effect of hole-polaron charging at a hole-injection/hole-transport interface within a functioning organic diode was investigated by single molecule spectroscopy and associated modeling. Efficient quenching of both singlet and triplet excitons by hole polarons is observed at high forward bias due to a buildup of interfacial polaron density. Additionally, for some diodes, an unexpected quenching process was observed at reverse bias, which is ascribed to hole charging of the interface due to the leakage current.",

author = "Lee, {Young Jong} and Park, {So Jung} and Gesquiere, {Andre J.} and Barbara, {Paul F.}",

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AB - The effect of hole-polaron charging at a hole-injection/hole-transport interface within a functioning organic diode was investigated by single molecule spectroscopy and associated modeling. Efficient quenching of both singlet and triplet excitons by hole polarons is observed at high forward bias due to a buildup of interfacial polaron density. Additionally, for some diodes, an unexpected quenching process was observed at reverse bias, which is ascribed to hole charging of the interface due to the leakage current.

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Probing a molecular interface in a functioning organic diode

Abstract

Bibliographical note

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