Importance of domain purity and molecular packing in efficient solution-processed small-molecule solar cells

Abstract

Connections are delineated between solar-cell performance, charge-carrier mobilities, and morphology in a highperformance molecular solar cell. The observations show that maximizing the relative phase purity and structural order while simultaneously limiting the domain size may be essential for achieving optimal solar-cell performances in solution-processed small-molecule solar cells .

Keywords: bulk heterojunction (BHJ); domain purity; grazing incidence wide-angle X-ray scattering (GIWAXS); mobilities; resonant soft x-ray scattering (R-SoXS); small molecules.