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Electronic Structure of Single Crystal α-Perylene

Published

Author(s)

Sujitra J. Pookpanratana, Katelyn Goetz, Ruslan Ovsyannikov, Erika Giangrisostomi, Emily G. Bittle, Oana Jurchescu, Steven W. Robey, Christina A. Hacker

Abstract

In organic electronics, the highest estimated charge mobility in a device is typically achieved when the organic semiconductor is a single crystal. However, the measurement of the electronic and chemical structure of organic single crystals by photoemission lags far behind of the thin- film counterpart. The measurement challenge is due to two reasons: the insulating nature of the crystal surface and relatively small size of the crystals (millimeter to a few hundred micrometers). X-ray and ultraviolet-based photoemission measurements are achievable on single crystal α-perylene with measurement assistance from a blue light emitting laser to enhance photoconductivity of the crystal surface. We are able to clearly resolve multiple highest molecular orbitals and determine the ionization energy of α-perylene. We are able to obtain high-resolution C 1s spectrum which we can clearly distinguish contribution from carbon atoms in the two inequivalent sites and shake-up satellite features. Electronic ``band'' structure measurements of α-perylene are realized using a novel angle-resolved time-of-flight electron spectrometer and the complete α-perylene electronic structure and impact on electrical performance will be discussed.
Proceedings Title
Bulletin of the American Physical Society
Volume
62
Issue
4
Conference Dates
March 13-17, 2017
Conference Location
New Orleans, LA
Conference Title
American Physical Society March Meeting 2017

Citation

Pookpanratana, S. , Goetz, K. , Ovsyannikov, R. , Giangrisostomi, E. , Bittle, E. , Jurchescu, O. , Robey, S. and Hacker, C. (2017), Electronic Structure of Single Crystal α-Perylene, Bulletin of the American Physical Society, New Orleans, LA (Accessed July 23, 2021)
Created March 16, 2017, Updated September 15, 2017