Photoemission measurement of extremely insulating materials: Capacitive photocurrent detection in photoelectron yield spectroscopy

Yasuo Nakayama, Shinichi MacHida, Daisuke Tsunami, Yasuo Kimura, Michio Niwano, Yutaka Noguchi, Hisao Ishii

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

The electronic structures of various materials have been investigated using photoemission measurements. The sample charge-up problem, however, limits the application of these measurements to insulating materials. In this study, we propose a capacitive photocurrent detection method that permits photoelectron yield spectroscopy measurements of extremely insulating materials in both vacuum and ambient pressure conditions. The mechanism of detection is discussed, and the application to gold and rubrene films on mica substrates is demonstrated.

Original languageEnglish
Article number153306
JournalApplied Physics Letters
Volume92
Issue number15
DOIs
Publication statusPublished - 2008

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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