Two-photon photoemission of ultrathin film PTCDA morphologies on Ag(111)

Aram Yang; Steven T. Shipman; Sean Garrett-Roe; James Johns; Matt Strader; Paul Szymanski; Eric Muller; Charles Harris

doi:10.1021/jp076632q

Two-photon photoemission of ultrathin film PTCDA morphologies on Ag(111)

Aram Yang, Steven T. Shipman, Sean Garrett-Roe, James Johns, Matt Strader, Paul Szymanski, Eric Muller, Charles Harris

Chemistry (Twin Cities)

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

36 Scopus citations

Abstract

Morphology- and layer-dependent electronic structure and dynamics at the PTCDA/Ag(111) interface have been studied with angle-resolved two-photon photoemission. In Stranski-Krastanov growth modes, the exposed wetting layer inhibited the evolution of the vacuum level and valence band to bulk values. For layer-by-layer growth, we observed the transition of electron structure from monolayer to bulk values within eight monolayers. Effective masses and lifetimes of the conduction band and the n = 1 image potential state were measured to be larger for disordered layers. The effective mass was interpreted in the context of charge mobility measurements.

Original language	English (US)
Pages (from-to)	2506-2513
Number of pages	8
Journal	Journal of Physical Chemistry C
Volume	112
Issue number	7
DOIs	https://doi.org/10.1021/jp076632q
State	Published - Feb 21 2008

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abstract = "Morphology- and layer-dependent electronic structure and dynamics at the PTCDA/Ag(111) interface have been studied with angle-resolved two-photon photoemission. In Stranski-Krastanov growth modes, the exposed wetting layer inhibited the evolution of the vacuum level and valence band to bulk values. For layer-by-layer growth, we observed the transition of electron structure from monolayer to bulk values within eight monolayers. Effective masses and lifetimes of the conduction band and the n = 1 image potential state were measured to be larger for disordered layers. The effective mass was interpreted in the context of charge mobility measurements.",

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AU - Yang, Aram

AU - Shipman, Steven T.

AU - Garrett-Roe, Sean

AU - Johns, James

AU - Strader, Matt

AU - Szymanski, Paul

AU - Muller, Eric

AU - Harris, Charles

PY - 2008/2/21

Y1 - 2008/2/21

N2 - Morphology- and layer-dependent electronic structure and dynamics at the PTCDA/Ag(111) interface have been studied with angle-resolved two-photon photoemission. In Stranski-Krastanov growth modes, the exposed wetting layer inhibited the evolution of the vacuum level and valence band to bulk values. For layer-by-layer growth, we observed the transition of electron structure from monolayer to bulk values within eight monolayers. Effective masses and lifetimes of the conduction band and the n = 1 image potential state were measured to be larger for disordered layers. The effective mass was interpreted in the context of charge mobility measurements.

AB - Morphology- and layer-dependent electronic structure and dynamics at the PTCDA/Ag(111) interface have been studied with angle-resolved two-photon photoemission. In Stranski-Krastanov growth modes, the exposed wetting layer inhibited the evolution of the vacuum level and valence band to bulk values. For layer-by-layer growth, we observed the transition of electron structure from monolayer to bulk values within eight monolayers. Effective masses and lifetimes of the conduction band and the n = 1 image potential state were measured to be larger for disordered layers. The effective mass was interpreted in the context of charge mobility measurements.

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Two-photon photoemission of ultrathin film PTCDA morphologies on Ag(111)

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