Coadsorption of Na and Br2 on WSe2 (0001). Creating a surface redox couple?

✍ Scribed by T. Mayer; J. Lehmann; C. Pettenkofer; W. Jaegermann

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 648 KB
• Volume: 198
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(92)85039-d

✦ Synopsis

The interface between UHV-cleaved n-WSez (0001 ) and coadsorbed Br, and Na has been investigated as a model of a semiconductor/electrolyte interface. Brz is molecularly adsorbed and leads to a strong inversion layer of n-WSe*. Na coadsorption forms Br-on the surface with no pronounced change of semiconductor band bending for Na coverage<Br, coverage. Flat band conditions are reestablished for complete transformation of Br, to a NaBr surface species.