Details

Autor(en) / Beteiligte

• Carlé, Jon Eggert
• Andreasen, Birgitta
• Tromholt, Thomas
• Madsen, Morten V.
• Norrman, Kion
• Jørgensen, Mikkel
• Krebs, Frederik C.

Titel

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

Ist Teil von

• Journal of materials chemistry, 2012-12, Vol.22 (46), p.24417-24423

Erscheinungsjahr

2012

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.