Photoemission from polycyclic aromatic crystals in the vacuum-ultraviolet region. V. Photoelectron spectroscopy by the rare gas resonance lines and vacuum-ultraviolet absorption spectra.
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概要
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The photoelectron spectra (energy distribution curves, ECDs) of naphthacene, pentacene, perylene, coronene, and <I>p</I>-terphenyl by He(I), Ne(I), and Ar(I) resonance lines (photon energies, 11.62–21.22 eV) and the absorption spectra of naphthacene, pentacene, perylene, and coronene at 4–9.5 eV are measured for evaporated polycrystal films. The absorption spectra are compared with the spectral dependence of the quantum yield (SDQY) of photoemission. A similar comparison is also made for <I>p</I>-terphenyl and anthracene. The origin of the structures in SDQY curves is discussed. The analysis reveals that: (1) the MOs of a molecule are preserved even in crystals; (2) the large peak at a low kinetic energy of the photoelectron spectra is due to secondary electrons, and (3) at least for naphthacene, pentacene, and coronene, autoionization takes place with a considerable efficiency.
- 公益社団法人 日本化学会の論文
著者
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Inokuchi Hiroo
The Institute For Solid State Physics The University Of Tokyo
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Seki Kazuhiko
The Institute for Solid State Physics, The University of Tokyo
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Hirooka Tomohiko
Department of Chemistry, Faculty of Science, The University of Tokyo
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Kamura Yusuke
The Institute for Solid State Physics, The University of Tokyo
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