Title: The effect of magnesium added at C-60/Rubrene heterointerfaces
Authors: Cheng, Chiu-Ping
Lee, Cheng-Wei
Chu, Yu-Ya
Wei, Ching-Hsuan
Pi, Tun-Wen
Department of Materials Science and Engineering
Issue Date: 28-Dec-2013
Abstract: This study examines the effect of adding magnesium (Mg) at Codrubrene heterointerfaces by using synchrotron-radiation photoetnission spectroscopy. The heterointerface was obtained by depositing C-60 on a 4-angstrom Mg/rubrene surface. The photoemission spectra showed that the added Mg preferentially interacts with and transfers negative charges to C-60. The interfacial dipole potential was significantly enlarged, as was the separation between the lowest unoccupied molecular orbital of C-60 and the highest occupied molecular orbital of rubrene. The results demonstrate that the addition of Mg should be an effective method for improving the efficiency of light- and current-generating devices. (C) 2013 AlP Publishing LLC.
URI: http://dx.doi.org/10.1063/1.4854815
ISSN: 0021-8979
DOI: 10.1063/1.4854815
Volume: 114
Issue: 24
End Page: 
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