Fast photoresponse in organic semiconductors: Understanding the mechanisms and structure-property relationships

O. Ostroverkhova; S. Shcherbyna; D. G. Cooke; R. Egerton; R. R. Tykwinski; J. E. Anthony; F. A. Hegmann

doi:10.1117/12.562334

Fast photoresponse in organic semiconductors: Understanding the mechanisms and structure-property relationships

O. Ostroverkhova, S. Shcherbyna, D. G. Cooke, R. Egerton, R. R. Tykwinski, J. E. Anthony, F. A. Hegmann

Research output: Contribution to journal › Conference article › peer-review

7 Scopus citations

Abstract

We present a comprehensive study of ultrafast time-resolved photoconductivity in pentacene and functionalized pentacene single crystals and thin films measured using optical pump-terahertz probe technique. By investigating the wavelength and temperature dependence of the transient photoconductivity, we reveal a sub-picosecond wavelength-independent charge carrier photogeneration and band-like charge transport in both single crystal and thin film samples. The amplitude and decay dynamics of the photoconductivity transients are correlated with the morphology of the films, assessed by atomic force and electron microscopy.

Original language	English
Article number	28
Pages (from-to)	163-174
Number of pages	12
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5517
DOIs	https://doi.org/10.1117/12.562334
State	Published - 2004
Event	Linear and Nonlinear Optics of Organic Materials IV - Denver, CO, United States Duration: Aug 2 2004 → Aug 3 2004

Keywords

Molecular electronics
Organic semiconductors
Pentacene
Terahertz spectroscopy
Transient photoconductivity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.562334

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title = "Fast photoresponse in organic semiconductors: Understanding the mechanisms and structure-property relationships",

abstract = "We present a comprehensive study of ultrafast time-resolved photoconductivity in pentacene and functionalized pentacene single crystals and thin films measured using optical pump-terahertz probe technique. By investigating the wavelength and temperature dependence of the transient photoconductivity, we reveal a sub-picosecond wavelength-independent charge carrier photogeneration and band-like charge transport in both single crystal and thin film samples. The amplitude and decay dynamics of the photoconductivity transients are correlated with the morphology of the films, assessed by atomic force and electron microscopy.",

keywords = "Molecular electronics, Organic semiconductors, Pentacene, Terahertz spectroscopy, Transient photoconductivity",

author = "O. Ostroverkhova and S. Shcherbyna and Cooke, {D. G.} and R. Egerton and Tykwinski, {R. R.} and Anthony, {J. E.} and Hegmann, {F. A.}",

year = "2004",

doi = "10.1117/12.562334",

language = "English",

volume = "5517",

pages = "163--174",

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TY - JOUR

T1 - Fast photoresponse in organic semiconductors

T2 - Linear and Nonlinear Optics of Organic Materials IV

AU - Ostroverkhova, O.

AU - Shcherbyna, S.

AU - Cooke, D. G.

AU - Egerton, R.

AU - Tykwinski, R. R.

AU - Anthony, J. E.

AU - Hegmann, F. A.

PY - 2004

Y1 - 2004

N2 - We present a comprehensive study of ultrafast time-resolved photoconductivity in pentacene and functionalized pentacene single crystals and thin films measured using optical pump-terahertz probe technique. By investigating the wavelength and temperature dependence of the transient photoconductivity, we reveal a sub-picosecond wavelength-independent charge carrier photogeneration and band-like charge transport in both single crystal and thin film samples. The amplitude and decay dynamics of the photoconductivity transients are correlated with the morphology of the films, assessed by atomic force and electron microscopy.

AB - We present a comprehensive study of ultrafast time-resolved photoconductivity in pentacene and functionalized pentacene single crystals and thin films measured using optical pump-terahertz probe technique. By investigating the wavelength and temperature dependence of the transient photoconductivity, we reveal a sub-picosecond wavelength-independent charge carrier photogeneration and band-like charge transport in both single crystal and thin film samples. The amplitude and decay dynamics of the photoconductivity transients are correlated with the morphology of the films, assessed by atomic force and electron microscopy.

KW - Molecular electronics

KW - Organic semiconductors

KW - Pentacene

KW - Terahertz spectroscopy

KW - Transient photoconductivity

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DO - 10.1117/12.562334

M3 - Conference article

AN - SCOPUS:13244271933

SN - 0277-786X

VL - 5517

SP - 163

EP - 174

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

M1 - 28

Y2 - 2 August 2004 through 3 August 2004

ER -

Fast photoresponse in organic semiconductors: Understanding the mechanisms and structure-property relationships

Abstract

Keywords

ASJC Scopus subject areas

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