Conductivity of powdered ZnO with chemisorbed oxygen during photodesorption

摘要

We have investigated the connection between changes in surface conductivity of ZnO with chemisorbed oxygen, and the number of gas molecules photodesorbed with band‐gap illumination. Experiments under UHV conditions with powdered samples show that the initial stages of photodesorption are not described by a simple electron transfer mechanism, while later stages can be reasonably well explained in that way.