The influence of molecular weight distribution on the optimal thermal treatment of poly(3-hexythiophene) based bulk heterojunction photovoltaic cells

Roger C. Hiorns (1) , R. de Bettignies (2) , J. Leroy (3) , S. Bailly (4) , M. Firon (5) , C. Sentein , Hugues Preud'Homme (6) , Christine Lartigau-Dagron (7)

1 LCPO - Laboratoire de Chimie des polymères organiques
2 POMA - Propriétés Optiques des Matériaux et Applications
3 G2R - Géologie et gestion des ressources minérales et énergétiques
4 LAPTH - Laboratoire d'Annecy-le-Vieux de Physique Théorique
5 LCS - Laboratoire Composants Solaires
6 LCABIE - Laboratoire de Chimie Analytique Bio-Inorganique et Environnement
7 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux

Chlorobenzene cast films of poly(3-hexylthiophene)-Wend-[6,6]-phenyl C 61 butyric acid methyl ester (P3HT-blend-PCBM) in 1:1 ratios were used in photovoltaic cells with the structure glass/ITO/PEDOT-Wend-PSS/P3HT- Wend-PCBM/LiF/Al. By varying the molecular weights of the PSHTs from 4500 to 280000 g mol-1, it was found that P3HT molecular weight distributions had an important impact on cell characteristics and the most effective annealing temperature required.

Domaines: Chimie; Polymères

Roger C. Hiorns, R. de Bettignies, J. Leroy, S. Bailly, M. Firon, et al.. The influence of molecular weight distribution on the optimal thermal treatment of poly(3-hexythiophene) based bulk heterojunction photovoltaic cells. European Physical Journal: Applied Physics, 2006, 36 (3), pp.295-300. ⟨10.1051/epjap:2006127⟩. ⟨hal-01559904⟩