George F. A. Dibb

TL;DR: In this paper, the reproducibility of the mobility of organic semiconducting materials was investigated using the space-charge limited current (SCLC) method and the authors found that mobility measured on nominally identical devices could vary by more than one order of magnitude with the largest sources of variation being poor electrodes and film thickness variation.

TL;DR: By introducing tail states into a continuum drift diffusion model, this article was able to self-consistently reproduce the experimental voltage-dependent carrier concentration, the currentvoltage curve, an...

TL;DR: In this paper, the authors investigate the reasons for the decrease in photocurrent of poly(3-hexylthiophene) (P3HT) as the donor and find that it can be attributed partly to a loss in charge generation efficiency that may be related to the LUMO-LUMO and HOMO-HOMO offsets at the donor-acceptor heterojunction, and partly to reduced charge carrier collection efficiencies.

TL;DR: The lower FF observed for the PCPDTBT-based device results from enhanced nongeminate recombination even at short circuit, and it is shown that for APFO-3 devices, the FF is primarily limited by a voltage-dependent free charge generation, which is assigned to a geminated recombination process.

TL;DR: In this paper, a poly(3-hexylthiophene):[6,6]-phenyl C61-butyric acid methyl ester (P3HT:PCBM) device using corrected photocurrent and transient photovoltage experiments was analyzed and it was shown that the charge recombination rate scales superlinearly with the charge carrier density.