Research Papers in Physics and Astronomy

 

Date of this Version

2011

Citation

Applied Surface Science 257 (2011) 3399–3403

Comments

© 2010 Elsevier B.V.

This document is a U.S. government work and is not subject to copyright in the United States.

doi:10.1016/j.apsusc.2010.11.033

Abstract

Wehave compared the photovoltaic charging of the (100) surface termination for Cu doped and undoped Li2B4O7. While the surface charging at the (100) surface of Li2B4O7 is significantly greater than observed at (110) surface, the Cu doping plays a role in reducing the surface photovoltage effects. With Cu doping of Li2B4O7, the surface photovoltaic charging is much diminished at the (100) surface. The density of states observed with combined photoemission and inverse photoemission remains similar to that observed for the undoped material, except in the vicinity of the conduction band edge.

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