A method for identifying the cause of inefficient salt-doping in organic semiconductors.

Doping to enhance the electrical conductivity of organic semiconductors is not without its challenges: The efficacy of this process depends on many factors and it is not always clear how to remedy poor doping. In the case of doping with salts, one of the possible causes of poor doping is a limited yield of integer charge transfer resulting in the presence of both cations and anions in the film. The charge of such ions can severely limit the electrical conductivity, but their presence is not easily determined.

Investigating the dielectric properties and exciton diffusion in C derivatives.

In recent years, the dielectric constant () of organic semiconductors (OSCs) has been of interest in the organic photovoltaic (OPV) community due to its potential influence on the exciton binding energy. Despite progress in the design of high OSCs and the accurate measurement of the , the effects of the synthetic strategies on specific (opto)electronic properties of the OSCs remain uncertain. In this contribution, the effects of on the optical properties of five new C derivatives and [70]PCBM are investigated.

Fullerene derivatives with oligoethylene-glycol side chains: an investigation on the origin of their outstanding transport properties.

For many years, fullerene derivatives have been the main n-type material of organic electronics and optoelectronics. Recently, fullerene derivatives functionalized with ethylene glycol (EG) side chains have been showing important properties such as enhanced dielectric constants, facile doping and enhanced self-assembly capabilities. Here, we have prepared field-effect transistors using a series of these fullerene derivatives equipped with EG side chains of different lengths.

Molecular Doping Directed by a Neutral Radical.

Molecular doping makes possible tunable electronic properties of organic semiconductors, yet a lack of control of the doping process narrows its scope for advancing organic electronics. Here, we demonstrate that the molecular doping process can be improved by introducing a neutral radical molecule, namely nitroxyl radical (2,2,6,6-teramethylpiperidin-i-yl) oxyl (TEMPO). Fullerene derivatives are used as the host and 1,3-dimethyl-2-phenyl-2,3-dihydro-1-benzo[d]imidazoles (DMBI-H) as the n-type dopant.

[Risk of recidivism for forensic psychiatric patients with an autism spectrum disorder].

Background: There is limited knowledge of the predictive validity of risk factors and protective factors for recidivism in forensic psychiatric patients with an autism spectrum disorder (ASD).

Aim: To examine risk factors, protective factors and the predictive value of these factors in relation to recidivism for forensic psychiatric patients with ASD compared to patients without ASD.

Method: For 69 patients, including 32 patients with ASD, the risk factors and protective factors were measured at the start and end of treatment.