Dynamics of photochemical processes of N2O absorbed on metal and semiconductor surfaces

Yoshiyasu Matsumoto; Jihwa Lee; H. Kato; K. Sawabe

doi:10.1117/12.180855

21 July 1994 Dynamics of photochemical processes of N₂O absorbed on metal and semiconductor surfaces

Yoshiyasu Matsumoto, Jihwa Lee, H. Kato, K. Sawabe

Proceedings Volume 2125, Laser Techniques for Surface Science; (1994) https://doi.org/10.1117/12.180855
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

Photodissociation dynamics of N₂O adsorbed on Si(100) has been compared with that on Pt(111). N₂O is adsorbed molecularly on both of the surfaces at lower than 95 K. Upon the irradiation of excimer laser pulses at 193 and 248 nm, adsorbed N₂O is dissociated to oxygen and N₂. While oxygen remains on the surfaces, N₂ desorbs from the surfaces. Translational energy distributions of N₂ are measured by time-of-flight (TOF) spectroscopy. The TOF distributions of N₂ desorbing from Si(100) as well as Pt(111) show nonthermal multiple velocity components. There are some differences in the N₂ desorption characteristics between the two cases. In particular, the translational energy distribution of N₂ fragments from Si(100) depends on the desorption angle. Furthermore, the N₂ desorption from Si(100) is peaked at approximately 30 degree(s) from the surface normal. These peculiar features observed in N₂O photodissociation on Si(100) are discussed in relation to the adsorption structure of N₂O.

Citation Download Citation

Yoshiyasu Matsumoto, Jihwa Lee, H. Kato, and K. Sawabe "Dynamics of photochemical processes of N₂O absorbed on metal and semiconductor surfaces", Proc. SPIE 2125, Laser Techniques for Surface Science, (21 July 1994); https://doi.org/10.1117/12.180855

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