Band structure engineering in organic semiconductors

A key breakthrough in modern electronics was the introduction of band structure engineering, the design of almost arbitrary electronic potential structures by alloying different semiconductors to continuously tune the band gap and band-edge energies. Implementation of this approach in organic semiconductors has been hindered by strong localization of the electronic states in these materials. We show that the influence of so far largely ignored long-range Coulomb interactions provides a workaround. Photoelectron spectroscopy confirms that the ionization energies of crystalline organic semiconductors can be continuously tuned over a wide range by blending them with their halogenated derivatives. Correspondingly, the photovoltaic gap and open-circuit voltage of organic solar cells can be continuously tuned by the blending ratio of these donors

On the Treatment of Non-Original Sample Members in the German Household Panel Study (SOEP) : Tracing, Weighting, and Frequencies

Spieß M, Kroh M, Pischner R, Wagner GG. On the Treatment of Non-Original Sample Members in the German Household Panel Study (SOEP) : Tracing, Weighting, and Frequencies. Data Documentation. Vol 30. Berlin: Deutsches Inst. für Wirtschaftsforschung; 2008

Dendritic-cell immunotherapy: from ex vivo loading to in vivo targeting.

Contains fulltext : 51974.pdf (publisher's version ) (Closed access)The realization that dendritic cells (DCs) orchestrate innate and adaptive immune responses has stimulated research on harnessing DCs to create more effective vaccines. Early clinical trials exploring autologous DCs that were loaded with antigens ex vivo to induce T-cell responses have provided proof of principle. Here, we discuss how direct targeting of antigens to DC surface receptors in vivo might replace laborious and expensive ex vivo culturing, and facilitate large-scale application of DC-based vaccination therapies