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Characteristics of Organic–Metal Interaction: A Perspective from Bonding Distance to Orbital Delocalization

DOI: 10.7566/JPSJ.87.061008 DOI Help

Authors: Satoshi Kera (Institute for Molecular Science; Chiba University) , Takuya Hosokai (National Institute of Advanced Industrial Science and Technology (AIST)) , Steffen Duhm (Soochow University)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of The Physical Society Of Japan , VOL 87

State: Published (Approved)
Published: March 2018

Abstract: Understanding the mechanisms of energy-level alignment and charge transfer at the interface is one of the key issues in realizing organic electronics. However, the relation between the interface structure and the electronic structure is still not resolved in sufficient detail. An important character of materials used in organic electronics is the electronic localization of organic molecules at interfaces. To elucidate the impact of the molecular orbital distribution on the electronic structure, detailed structural information is required, particularly the vertical bonding distance at the interface, which is a signature of the interaction strength. We describe the recent progress in experimental studies on the impact of the molecule-metal interaction on the electronic structure of organic–metal interfaces by using various photoelectron spectroscopies, and review the results, focusing on the X-ray standing wave technique, to demonstrate the evaluation of the vertical bonding distance.

Subject Areas: Physics, Materials

Instruments: I09-Surface and Interface Structural Analysis

Other Facilities: ESRF

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