Hannover 2010 – scientific programme
Parts | Days | Selection | Search | Downloads | Help
MO: Fachverband Molekülphysik
MO 27: Poster: Cluster
MO 27.8: Poster
Thursday, March 11, 2010, 16:00–18:30, Lichthof
Influence of Functionalization on the Electronic Structure of Ideal Diamond Clusters - Diamondoids — •Stephanie Wutschik1, David Wolter1, Lasse Landt1, Matthias Staiger1, Peter R. Schreiner2, Jeremy E. Dahl3, Robert M. K. Carlson3, Christoph Bostedt4, and Thomas Möller1 — 1Technische Universität Berlin, Germany — 2Justus-Liebig-Universität Gießen, Germany — 3MolecularDiamond Technologies, USA — 4LCLS Stanford, USA
Diamondoids are ideal hydrogen passivated diamond clusters in the (sub-) nanometer regime which can be isolated from petroleum and perfectly size and isomer selected. They have opened new possibilities for a variety of experimental studies concerning size and shape dependence of the electronic structure and optical properties [1] of semiconductor clusters. The selective functionalization of diamondoids now allows for a detailed investigation of its effect on the surface and on the electronic and optical properties of semiconductor nanocrystals. Furthermore, functionalization is needed to include diamondoids in solid-state devices which opens a wide range of possible applications.
We studied the effect of functionalization on optical and electronic properties for differently sized diamondoids and for various functional groups (thiol, hydroxyl, bromine, oxygen, iodine and amine). We find that functionalization can be used to tune the optical gap of diamondoids and to modify their electronic structure.
[1] L. Landt, et al. Phys. Rev. Lett. 103, 047402 (2009)