Interface energetics and light-matter interaction of molecular layers on semiconductors and functionalized nano templates

Focus: 
Nanometrology

Organic molecules will be used to functionalize two-dimensional oxide templates and semiconductor surfaces. Such tailored surfaces and interfaces have large significance for surface passivation, bio-sensing and nanoelectronics applications. In this context understanding and controlling the transfer of electrical charges across the interface and as well as light-matter interaction of inserted molecules in the array is of fundamental importance. In the proposed thesis, arrays based on anodized aluminium with periodic pores in the nanometer range as well as Si and III-V semiconductor surfaces will be used, functionalized with molecule monolayers based on, e.g., phosphonate, thiol linker or hydrosilylation chemistry. The aim is to tailor the band structure via the material composition, and the conductance and Fermi level position via impurity doping over a wide range. With respect to optics the fluorescence dynamics and Raman scattering cross section will be optimized.

Mentor/s: 
Lemmens
Mentor/s: 
Tornow
Institution: 
PTB
Institution: 
TU Braunschweig
Status: 
in progress
Ph.D. student: 
Pathak