Hybrid Heterojunction Nanorods for Nanoscale Controlled Morphology in Bulk Heterojunction Solar Cells

• DOI: 10.1021/jp112369t
• Publication Date: 2011-05-06T14:49:40Z
• Authors: Jose Mawyin; Ivan Shupyk; Mingqing Wang; Guillaume Poize; Pedro Atienzar; Thilini Ishwara; James R. Durrant; Jenny Nelson; Daiki Kanehira; Noriyuki Yoshimoto; Cyril Martini; Ekaterina Shilova; Patrick Secondo; Hugues Brisset; Frederic Fages; Jörg Ackermann
• Keywords: Nanorod; Hybrid solar cell

In this study, we report bulk heterojunction solar cells using hybrid nanorods as photoactive material. The core–shell are obtained via self-assembly of low band gap p-type oligomers onto ZnO nanorod surfaces. This produces highly soluble donor–acceptor nanostructures that feature a grafted semiconducting monolayer with 2.1 eV. solution processing the coaxial into thin films leads to heterojunctions particularly large interfaces. Importantly by simple donor domains smaller than typical exciton diffusion length organic semiconductors which guaranties efficient dissociation. corresponding reveal hydrid layers form interpenetrated networks lead external quantum efficiency 20% at absorption maximum λmax = 498 nm. Although these constituted monolayers, transient spectroscopy could evidence long-lived photoinduced charge carrier generation significant intensity. Thus described represent promising strategy toward nanoscale controlled cells.