Regensburg 2016 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 60: Focus: Two Dimensional Functional Materials II

CPP 60.3: Vortrag

Donnerstag, 10. März 2016, 15:45–16:00, H51

Graphitic carbon nitrides as graphene complements: new insights and challenges — •Christoph Merschjann — Freie Universität Berlin, Fachbereich Physik, Arnimallee 14, 14195 Berlin

"Graphitic" carbon nitride (CN) polymers are currently studied all over the world, mainly for photocatalytic processes like metal-free solar water-splitting, but also for solid-state lighting, hybrid photovoltaics, and organic electronics in general. Bearing its name due to a two-dimensional polymeric structure, the CN material class shows several fascinating properties, such as tunable optical band gap in the UV-VIS-IR range, comparably easy synthesis processes, and high chemical and thermal stability.
Just recently we could deduce the charge carrier mobility from transient fluorescence measurements, showing that the CN material class comprises reasonable candidates for optoelectronic applications. Moreover, we found that charge transport is mainly confined to channels perpendicular to the two-dimensional structure [1]. The materials thus complement graphene, possibly opening the way for novel applications.

The talk will give an overview of the latest opto-electronic physical findings in different CN materials as well as a discussion of the challenges of such measurements in optically scattering samples.
[1] C. Merschjann et al., Advanced Materials 2015, DOI: 10.1002/adma.201503448