Bridging the pressure gap in model systems for heterogeneous catalysis with high-pressure scanning tunneling microscopy

2007 ◽  
Vol 9 (27) ◽  
pp. 3460-3469 ◽  
Author(s):  
Ronnie T. Vang ◽  
E. Lægsgaard ◽  
Flemming Besenbacher
Keyword(s):  
High Pressure ◽  
Heterogeneous Catalysis ◽  
Scanning Tunneling Microscopy ◽  
Model Systems ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Pressure Gap

CO-induced restructuring of Pt(110)-(1×2): Bridging the pressure gap with high-pressure scanning tunneling microscopy

2003 ◽  
Vol 118 (8) ◽  
pp. 3724-3730 ◽  
Author(s):  
P. Thostrup ◽  
E. Kruse Vestergaard ◽  
T. An ◽  
E. Lægsgaard ◽  
F. Besenbacher
Keyword(s):  
High Pressure ◽  
Scanning Tunneling Microscopy ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Pressure Gap

Structure, bonding, and growth at a metal–organic interface in the weak chemisorption regime: Perylene–Ag(111)

2004 ◽  
Vol 19 (7) ◽  
pp. 2028-2039 ◽  
Author(s):  
M. Eremtchenko ◽  
D. Bauer ◽  
J.A. Schaefer ◽  
F.S. Tautz
Keyword(s):  
Scanning Tunneling Microscopy ◽  
Organic Semiconductors ◽  
Film Growth ◽  
Field Effect Transistors ◽  
Analytical Techniques ◽  
Model Systems ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Resolution Electron ◽  
Metal Organic

Organic semiconductors on single-crystalline metal surfaces are model systems for injection contacts in organic field-effect transistors (OFET) and light-emitting diodes. They allow us to classify possible metal–organic interaction scenarios and to elucidate general tendencies, which most likely will also be found at metal–organic interfaces in real devices. In this contribution, we report a comprehensive investigation of the interface of perylene, a promising material for OFETs, with the close-packed noble metal surface Ag(111), using high-resolution electron energy loss spectroscopy, low-energy electron diffraction, and scanning tunneling microscopy as surface analytical techniques. The most important findings are: In the monolayer, molecules are oriented flat and form an incommensurate, most probably fluid overlayer. The molecules interact electronically with the substrate and become weakly metallic. Scanning tunneling microscopy reveals a propensity of perylene molecules toward a specific adsorption site on Ag(111), if the influence of intermolecular interactions is inhibited. Film growth at room temperature is similar to Stranski–Krastanov type. Finally, co-planar adsorption of perylene on Ag(111) is metastable, and annealing the monolayer at 420 K leads to a structural transformation of the film. The perylene–Ag(111) interface can therefore be classified as weakly interacting.

Adsorbate-Induced Alloy Phase Separation: A Direct View by High-Pressure Scanning Tunneling Microscopy

2005 ◽  
Vol 95 (12) ◽  
Author(s):  
Ebbe K. Vestergaard ◽  
Ronnie T. Vang ◽  
Jan Knudsen ◽  
Thorbjørn M. Pedersen ◽  
Toshu An ◽  
...  
Keyword(s):  
High Pressure ◽  
Phase Separation ◽  
Scanning Tunneling Microscopy ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Direct View

Coated silica tips for use in high-pressure, high-temperature, scanning tunneling microscopy

2001 ◽  
Vol 87 (1-2) ◽  
pp. 19-23 ◽  
Author(s):  
Brandon L. Weeks ◽  
Zoe H. Barber ◽  
Meera Raval ◽  
Mark E. Welland ◽  
Trevor Rayment
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Scanning Tunneling Microscopy ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
High Pressure High Temperature ◽  
Temperature Scanning
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