Direct Observation of the Thermal Desorption of Oxygen from the Surface of β-Copperphthalocyanine by X-Ray Photoelectron Spectroscopy
- 1 June 1982
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 21 (6R)
- https://doi.org/10.1143/jjap.21.822
Abstract
Thermal desorption of oxygen from the surface of β-copperphthalocyanine has been investigated in the temperature range of room temperature to 200°C by X-Ray Photoelectron Spectroscopy. The Ols peak due to adsorbed oxygen began to decrease at about 90°C and decreased further as the temperature increased. This direct observation of the thermal desorption supports the photocurrent-quenching model, in which the thermal quenching is caused by thermal desorption of ionosorbed oxygen in the form of O- 2 which has created an electrostatic field necessary for exciton dissociation into free electrons and holes.Keywords
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