Title of article
Visible light photoemission and negative electron affinity of single-crystalline CsCl thin films
Author/Authors
Yoshikawa، نويسنده , , Genki and Kiguchi، نويسنده , , Manabu and Ueno، نويسنده , , Keiji and Koma، نويسنده , , Atsushi and Saiki، نويسنده , , Koichiro، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2003
Pages
7
From page
220
To page
226
Abstract
CsCl has been known to show extraordinary photoemission by visible (VIS) light only after ultraviolet (UV) light irradiation. To elucidate this phenomenon, photo yield and photoemission spectrum of a single-crystalline CsCl thin film were measured in ultrahigh vacuum. Photo yield measurements confirmed that photoelectrons were emitted from F-centers induced in the CsCl thin film by preceding UV irradiation. Absence of the similar phenomenon in the NaCl film indicated that VIS photoemission in alkali halides was caused not only by defect formation but also by negative electron affinity.
Keywords
Alkali Halides , Visible and ultraviolet photoelectron spectroscopy , Photoelectron emission , Heterojunctions , Insulating films
Journal title
Surface Science
Serial Year
2003
Journal title
Surface Science
Record number
1683902
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