Energy level alignments at poly[N-9′′-hepta-decanyl-2,7- carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′, 3′-benzothiadiazole)] on metal and polymer interfaces

Jung Hwa Seo; Shinuk Cho; Mario Leclerc; Alan J. Heeger

doi:10.1016/j.cplett.2010.12.071

Energy level alignments at poly[N-9′′-hepta-decanyl-2,7- carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′, 3′-benzothiadiazole)] on metal and polymer interfaces

Jung Hwa Seo
, Shinuk Cho
, Mario Leclerc
, Alan J. Heeger

Department of Physics

University of Ulsan
Université Laval
University of California at Santa Barbara

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

20 Scopus citations

Abstract

Energy level alignments of poly[N-9′′-hepta-decanyl-2,7- carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′, 3′-benzothiadiazole)] (PCDTBT) cast on top of Au and poly(3,4- ethylenedioxythiophene):poly(styrene sulfonic acid) (PEDOT:PSS) were investigated using ultraviolet and X-ray photoelectron spectroscopy (UPS and XPS) as a function of the concentration of PCDTBT solutions. Although UPS data show similar work functions for Au and PEDOT:PSS, the hole transport barrier (_h) at the PCDTBT/PEDOT:PSS interface is clearly smaller than that at the PCDTBT/Au interface. The XPS spectra show that energy level relaxation occurs at the interface between PCDTBT and electrodes.

Original language	English
Pages (from-to)	101-104
Number of pages	4
Journal	Chemical Physics Letters
Volume	503
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2010.12.071
State	Published - 8 Feb 2011

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title = "Energy level alignments at poly[N-9′′-hepta-decanyl-2,7- carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′, 3′-benzothiadiazole)] on metal and polymer interfaces",

abstract = "Energy level alignments of poly[N-9′′-hepta-decanyl-2,7- carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′, 3′-benzothiadiazole)] (PCDTBT) cast on top of Au and poly(3,4- ethylenedioxythiophene):poly(styrene sulfonic acid) (PEDOT:PSS) were investigated using ultraviolet and X-ray photoelectron spectroscopy (UPS and XPS) as a function of the concentration of PCDTBT solutions. Although UPS data show similar work functions for Au and PEDOT:PSS, the hole transport barrier (h) at the PCDTBT/PEDOT:PSS interface is clearly smaller than that at the PCDTBT/Au interface. The XPS spectra show that energy level relaxation occurs at the interface between PCDTBT and electrodes.",

author = "Seo, \{Jung Hwa\} and Shinuk Cho and Mario Leclerc and Heeger, \{Alan J.\}",

year = "2011",

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doi = "10.1016/j.cplett.2010.12.071",

language = "English",

volume = "503",

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journal = "Chemical Physics Letters",

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T1 - Energy level alignments at poly[N-9′′-hepta-decanyl-2,7- carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′, 3′-benzothiadiazole)] on metal and polymer interfaces

AU - Seo, Jung Hwa

AU - Cho, Shinuk

AU - Leclerc, Mario

AU - Heeger, Alan J.

PY - 2011/2/8

Y1 - 2011/2/8

N2 - Energy level alignments of poly[N-9′′-hepta-decanyl-2,7- carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′, 3′-benzothiadiazole)] (PCDTBT) cast on top of Au and poly(3,4- ethylenedioxythiophene):poly(styrene sulfonic acid) (PEDOT:PSS) were investigated using ultraviolet and X-ray photoelectron spectroscopy (UPS and XPS) as a function of the concentration of PCDTBT solutions. Although UPS data show similar work functions for Au and PEDOT:PSS, the hole transport barrier (h) at the PCDTBT/PEDOT:PSS interface is clearly smaller than that at the PCDTBT/Au interface. The XPS spectra show that energy level relaxation occurs at the interface between PCDTBT and electrodes.

AB - Energy level alignments of poly[N-9′′-hepta-decanyl-2,7- carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′, 3′-benzothiadiazole)] (PCDTBT) cast on top of Au and poly(3,4- ethylenedioxythiophene):poly(styrene sulfonic acid) (PEDOT:PSS) were investigated using ultraviolet and X-ray photoelectron spectroscopy (UPS and XPS) as a function of the concentration of PCDTBT solutions. Although UPS data show similar work functions for Au and PEDOT:PSS, the hole transport barrier (h) at the PCDTBT/PEDOT:PSS interface is clearly smaller than that at the PCDTBT/Au interface. The XPS spectra show that energy level relaxation occurs at the interface between PCDTBT and electrodes.

UR - https://www.scopus.com/pages/publications/79751535130

U2 - 10.1016/j.cplett.2010.12.071

DO - 10.1016/j.cplett.2010.12.071

M3 - Article

AN - SCOPUS:79751535130

SN - 0009-2614

VL - 503

SP - 101

EP - 104

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Energy level alignments at poly[N-9′′-hepta-decanyl-2,7- carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′, 3′-benzothiadiazole)] on metal and polymer interfaces

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