Electronic Structure of Single Crystal α-Perylene

Published

March 16, 2017

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

Pub Type

Conferences

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 December 26, 2024)