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Photoelectron Spectroscopy of Molecular Anion of Alq3: An Estimation of Reorganization Energy for Electron Transport in the Bulk

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journal contribution
posted on 09.11.2018, 18:51 authored by Toshiaki Yanase, Ryuzo Nakanishi, Satoru Muramatsu, Kiichirou Koyasu, Hiroyuki Yoshida, Takashi Nagata, Tatsuya Tsukuda
A molecular anion of tris­(8-hydroxyquinolinato)aluminum (Alq3) was generated by a pulsed discharge to the solid sample under supersonic expansion and its photoelectron spectrum was recorded after mass selection. The vertical detachment energy of Alq3 and the adiabatic electron affinity of Alq3 were determined to be 1.24 ± 0.01 and 0.89 ± 0.04 eV, respectively. By using these energies determined for monomeric Alq3, the reorganization energy for the intermolecular electron transport in bulk Alq3 was estimated to be 0.70 ± 0.08 eV.