Silvia Janietz

TL;DR: In this article, the results of detailed investigations of powders and thin films of deuterated poly(3-hexylthiophene) (P3HT) fractions with different molecular weight were presented.

TL;DR: A novel fluorinated copolymer is introduced and shown to exhibit significantly higher power conversion efficiency in bulk heterojunction solar cells with PC(70)BM compared to the well-known low-band-gap polymer PCPDTBT.

TL;DR: The accurate measurement of the activation energy for free charge photogeneration over a wide range of photon energy is addressed through the method of time-delayed collection field and concludes that charge generation in such devices proceeds through thermalized charge transfer states, and that thermal energy is sufficient to separate most of these states into free charges.

TL;DR: In this paper, the authors provide evidence for highly localized charge transfer complex formation between a series of thiophenetetrafluorobenzene donor copolymers and the molecular acceptor tetrafluorsotetracyanoquinodimethane (F4TCNQ).

TL;DR: It is shown that the slower average extraction due to lower mobility accounts for the moderate fill factor when solar cells are fabricated with mono- or difluorinated PCPDTBT, rendering the monofluorinate derivative the most efficient donor polymer.