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Determining Tribocorrosion Rate and Wear-Corrosion Synergy of Bulk and Thin Film Aluminum Alloys
Published on: September 11, 2018
Bond cutting in Cs-doped tris(8-hydroxyquinoline) aluminium
Hsin Han Lee1, J Hwang, Tun Wen Pi
1Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
Abstract:
A series of Cs 4d and Al 2p spectra associated with valence-band and cut-off spectra have been used to characterize the interaction between caesium and tris(8-hydroxyquinoline) aluminium (Alq(3)) molecules in a Cs-doped Alq(3) layer. The Cs 4d and Al 2p spectra were tuned to be very surface sensitive by selecting a photon energy of 120 eV at the National Synchrotron Radiation Research Center, Taiwan. A critical Cs concentration exists, above which a new Al 2p signal appears next to the Al 2p peak of Alq(3) in the lower binding-energy side. The Al 2p signal was analyzed and assigned as being contributed from a mixture of Alq(2), Alq and Al. Experimental data supported the observation that bond cutting of Alq(3) by the doped Cs atoms occurred at high Cs doping concentration.
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