Electrical conductivity, photoemission and absorption spectrum of tetraselenonaphthacene, C18H8Se4

✍ Scribed by Ichimin Shirotani; Yusuke Kamura; Hiroo Inokuchi; Tomohiko Hirooka

• Book ID: 103015488
• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 341 KB
• Volume: 40
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(76)85072-5

✦ Synopsis

The electrical conductivity, the photoemission and the absorption spectrum of tetraselenonaphthacene (TSN) evaporated fiXm were studied. The conductivity of TSN film in a vacuum of 1.6 X lo-' torr was 7.7 X lo-' a-' cm-'. When the film was exposed to ti at atmospheric pressure, the vaiue of the conductivity was found to be 1.1 X IO-R-' cm-'. The ionization potential of the ffirn estimated from its electron spectroscopy energy distribution curve was 4.45 eV. The absorption band at 15 400 cm-' was insensitive to the pressure; on the contrary the band at 11 900 cm" showed a large red-shift at the rate of 120 cm-' /kbar. The remarkable difference in the pressure shift of the absorption bands in TSN fdm may 2&e from the Davfdov splitting.