Energy-level alignment at interfaces between gold and poly(3- hexylthiophene) films with two different molecular structures

Yeong Don Park; Jeong Ho Cho; Do Hwan Kim; Yunseok Jang; Hwa Sung Lee; Kyuwook Ihm; Tai Hee Kang; Kilwon Cho

doi:10.1149/1.2337862

Energy-level alignment at interfaces between gold and poly(3- hexylthiophene) films with two different molecular structures

Yeong Don Park, Jeong Ho Cho, Do Hwan Kim, Yunseok Jang, Hwa Sung Lee, Kyuwook Ihm, Tai Hee Kang, Kilwon Cho

Department of Chemical and Biomolecular Engineering

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

40 Citations (Scopus)

Abstract

The electronic structures of the interfaces between Au and poly(3-hexylthiophene) (P3HT) films with two different molecular orientations and orderings were investigated using synchrotron radiation photoemission spectroscopy. We found that, depending on whether thermal treatment was used, the P3HT thin film adopts two different molecular orientations, parallel and perpendicular to the silicon substrate, which result in different values of the vacuum level shift and hole-injection barrier. Thus, the molecular orientation and ordering of the P3HT material strongly affect the energy level alignment at the P3HT/Au interface.

Original language	English
Pages (from-to)	G317-G319
Journal	Electrochemical and Solid-State Letters
Volume	9
Issue number	11
DOIs	https://doi.org/10.1149/1.2337862
Publication status	Published - 2006

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)
Materials Science(all)
Physical and Theoretical Chemistry
Electrochemistry
Electrical and Electronic Engineering

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title = "Energy-level alignment at interfaces between gold and poly(3- hexylthiophene) films with two different molecular structures",

abstract = "The electronic structures of the interfaces between Au and poly(3-hexylthiophene) (P3HT) films with two different molecular orientations and orderings were investigated using synchrotron radiation photoemission spectroscopy. We found that, depending on whether thermal treatment was used, the P3HT thin film adopts two different molecular orientations, parallel and perpendicular to the silicon substrate, which result in different values of the vacuum level shift and hole-injection barrier. Thus, the molecular orientation and ordering of the P3HT material strongly affect the energy level alignment at the P3HT/Au interface.",

author = "Park, {Yeong Don} and Cho, {Jeong Ho} and Kim, {Do Hwan} and Yunseok Jang and Lee, {Hwa Sung} and Kyuwook Ihm and Kang, {Tai Hee} and Kilwon Cho",

year = "2006",

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language = "English",

volume = "9",

pages = "G317--G319",

journal = "Electrochemical and Solid-State Letters",

issn = "1099-0062",

publisher = "Electrochemical Society, Inc.",

number = "11",

}

Energy-level alignment at interfaces between gold and poly(3- hexylthiophene) films with two different molecular structures. / Park, Yeong Don; Cho, Jeong Ho; Kim, Do Hwan; Jang, Yunseok; Lee, Hwa Sung; Ihm, Kyuwook; Kang, Tai Hee; Cho, Kilwon.

In: Electrochemical and Solid-State Letters, Vol. 9, No. 11, 2006, p. G317-G319.

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

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AU - Park, Yeong Don

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AU - Lee, Hwa Sung

AU - Ihm, Kyuwook

AU - Kang, Tai Hee

AU - Cho, Kilwon

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AB - The electronic structures of the interfaces between Au and poly(3-hexylthiophene) (P3HT) films with two different molecular orientations and orderings were investigated using synchrotron radiation photoemission spectroscopy. We found that, depending on whether thermal treatment was used, the P3HT thin film adopts two different molecular orientations, parallel and perpendicular to the silicon substrate, which result in different values of the vacuum level shift and hole-injection barrier. Thus, the molecular orientation and ordering of the P3HT material strongly affect the energy level alignment at the P3HT/Au interface.

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