Kinetic Barrier Against Standing Up of Pentacene Molecules Upon a Pentacene Monolayer. Issue 8 (25th June 2018)

• Record Type: Journal Article
• Authors: Zhang, Lei; Huo, Shuchun; Fu, Xing; Hohage, Michael; Sun, Lidong
• Is Part Of: Physica status solidi. Volume 12:Issue 8(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-06-25
• Subjects: kinetic barrier -- optical anisotropy -- pentacene -- reorientation; Solid state physics -- Periodicals; 530.4105
• DOI: 10.1002/pssr.201800230
• Languages: English
• ISSNs: 1862-6254

Abstract

Abstract : The growth of pentacene thin films on Cu(110)‐(2 × 1)O surface was investigated in situ and in real time using reflectance difference spectroscopy (RDS). Deposition at a substrate temperature of 230 K results in a lying‐down orientation for all pentacene molecules. Subsequent annealing to a temperature of 350 K induces reorientation for molecules above the first monolayer into a standing‐up configuration. By a quantitative analysis on the corresponding evolution of the RD signals, the kinetic barrier of 970 ± 150 meV has been deduced for the reorientation of pentacene molecule. Abstract : Pentacene deposition on Cu(110)‐(2 × 1)O surface at 230 K results in a lying‐down orientation. Subsequent annealing to 350 K induces reorientation for molecules above the first monolayer into a standing‐up configuration. By a quantitative analysis on the corresponding evolution of the optical signals, the kinetic barrier of 970 ± 150 meV has been deduced for the reorientation of pentacene molecule.