The influence of additives on the morphology and stability of roll-to-roll processed polymer solar cells studied through ex situ and in situ X-ray scattering

Natalia Klaudia Zawacka, Thomas Rieks Andersen, Jens Wenzel Andreasen, Lea Hildebrandt Rossander, Henrik Friis Dam, Mikkel Jørgensen, Frederik C Krebs

Research output: Contribution to journalJournal articleResearchpeer-review

1 Downloads (Pure)

Abstract

The effect of twelve different additives on organic solar cells with an active layer based on poly-3- hexylthiophene (P3HT) and phenyl-C61-butyric acid methyl ester (PCBM) has been studied in this work and tested for suitability in roll-to-roll slot-die coating. Three of the twelve additives increased the solar cell efficiency while the rest showed no effect or a negative influence on the efficiency and coatability. In cases where the additive caused an increase in performance the relation to surface topography and the structure was investigated using Atomic Force Microscopy (AFM), UV-Vis Spectroscopy and Small Angle X-ray Scattering (SAXS) for cells prepared with 1-chloronaphthalene (CN), N-methyl-2-pyrrolidone (NMP) and 1,3-dimethyl-barbituric acid (BARB) as processing additives. The studies suggested that the use of these additives resulted in films with improved morphology and electrical properties of the active layer. The effect of the CN on structural evolution during different solvent evaporation and annealing times was further investigated with an in situ roll-to-roll X-ray study. Lifetime studies under continuous illumination were used to assess the impact of the additives on the stability of the prepared devices that had an active area of 1 cm2.
Original languageEnglish
JournalJournal of Materials Chemistry A
Volume2
Pages (from-to)18644–18654
ISSN2050-7488
DOIs
Publication statusPublished - 2014

Fingerprint Dive into the research topics of 'The influence of additives on the morphology and stability of roll-to-roll processed polymer solar cells studied through ex situ and in situ X-ray scattering'. Together they form a unique fingerprint.

Cite this