STM investigation of hot bromine atom chemistry on Pt(111)

H. Xu; R. Yuro; Ian A. Harrison

doi:10.1117/12.307131

30 April 1998 STM investigation of hot bromine atom chemistry on Pt(111)

H. Xu, R. Yuro, Ian A. Harrison

Proceedings Volume 3272, Laser Techniques for Surface Science III; (1998) https://doi.org/10.1117/12.307131
Event: Optoelectronics and High-Power Lasers and Applications, 1998, San Jose, CA, United States

Abstract

The corrosive adsorption of Br atoms on Pt(111) was studied by variable temperature STM, TPD, and AES. Photoinduced dissociative electron attachment to adsorbed CH₃Br at 193 nm was used to dose hot Br anions onto the surface of 90 K. Br formed two ordered structures on Pt(111): (3 X 3) and ((root)3 X (root)3) R30 degree(s). STM images show that both structures coexist at intermediate coverages. Photofragmentation of CH₃Br produced monovacancies on the Pt(111) surface which were attributed to abstractive attack by the hot Br anions. The initial monovacancy etching efficiency of the adsorbing Br anions was high, roughly 33%.

Citation Download Citation

H. Xu, R. Yuro, and Ian A. Harrison "STM investigation of hot bromine atom chemistry on Pt(111)", Proc. SPIE 3272, Laser Techniques for Surface Science III, (30 April 1998); https://doi.org/10.1117/12.307131

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available