James C. Blakesley

TL;DR: The photocurrent of the device is associated with a light-induced desorption of oxygen from the nanoparticle surfaces, thus removing electron traps and increasing the free carrier density which in turn reduces the Schottky barrier between contacts and ZnO nanoparticles for electron injection.

TL;DR: In this article, the effects of energetic disorder are incorporated through a Gaussian or exponential model of density of states for organic bulk heterojunction solar cells, and it is predicted that the open-circuit voltage depends on: (1) the donor-acceptor energy gap; (2) charge-carrier recombination rates; (3) illumination intensity; (4) the contact work functions (if not in the pinning regime); and (5) the amount of energy imbalance.

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: It is shown that blends comprising a small amount of semiconducting polymer mixed into an insulating polymer matrix actually perform very poorly in the undoped state, and that mobility and on/off ratio are improved dramatically upon moderate doping.

TL;DR: In this paper, a pump-probe experiment using optical excitation and an electrical probe with a resolution of <100 ns was performed on bulk heterojunctions of poly(3-hexylthiophene) and poly(6,6)-phenylC71 butyric acid methyl ester.