Comparative studies of photochemical cross-linking methods for stabilizing the bulk hetero-junction morphology in polymer solar cells

Jon Eggert Carle, Birgitta Andreasen, Thomas Tromholt, Morten V. Madsen, Kion Norrman, Mikkel Jorgensen, Frederik C. Krebs

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)

Abstract

We are here presenting a comparative study between four different types of functionalities for cross-linking. With relatively simple means bromine, azide, vinyl and oxetane could be incorporated into the side chains of the low band-gap polymer TQ1. Cross-linking of the polymers was achieved by UV-light illumination to give solvent resistant films and reduced phase separation and growth of PCBM crystallites in polymer:PCBM films. The stability of solar cells based on the cross-linked polymers was tested under various conditions. This study showed that cross-linking can improve morphological stability but that it has little influence on the photochemical stability which is also decisive for stable device operation under constant illumination conditions.
Original languageEnglish
Pages (from-to)24417-24423
JournalJournal of Materials Chemistry
Volume22
Issue number46
DOIs
Publication statusPublished - 2012
Externally publishedYes

Fingerprint

Dive into the research topics of 'Comparative studies of photochemical cross-linking methods for stabilizing the bulk hetero-junction morphology in polymer solar cells'. Together they form a unique fingerprint.

Cite this