Work

XPS study of sol–gel produced lanthanum oxide thin films

Year: 2014

Type: article

Abstract: La2O3 thin films were prepared by a sol–gel method and annealed in air and vacuum at various temperatures. The X-ray photoelectron spectroscopy (XPS) was used to investigate the properties and composition of films. The La 3d and O 1s spectra of films were analysed. It was shown that oxygen ions in La2O3 are in two states – O2– anions connected with lanthanum, and oxygen in the (OH)– group. The thermal transformation of lanthanum hydroxide to oxide process was triggered by thermal treatment at temperatures above 600 K. It was shown that after annealing thin films for longer time intervals in vacuum the intensity of O2– component increases and the intensity of oxygen in (OH)– decreases. The drop of oxygen in the (OH)– group was attributed to dehydration process.

Source: Lithuanian Journal of Physics

DOI: 10.3952/lithjphys.54208

Authors: Emilis Baškys, Vladimiras Bondarenka, Sergej Grebinskij, Mindaugas Senulis, Raimundas Sereika

Institutions: Center for Physical Sciences and Technology, Lithuanian University of Educational Sciences

Language: English

Topic: Electron and X-Ray Spectroscopy Techniques

Subfield: Surfaces, Coatings and Films

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W4234286705

FWCI: 0.903

Cites: 19

Cited by: 23

Related to: 10