Hybrid Lead-Halide Polyelectrolytes as Interfacial Electron Extraction Layers in Inverted Organic Solar Cells.

ABSTRACT: A series of lead-halide based hybrid polyelectrolytes was prepared and used as interfacial layers in organic solar cells (OSCs) to explore their effect on the energy band structures and performance of OSCs. Nonconjugated polyelectrolytes based on ethoxylated polyethylenimine (PEIE) complexed with PbX₂ (I, Br, and Cl) were prepared as polymeric analogs of the perovskite semiconductors CH₃NH₃PbX₃. The organic/inorganic hybrid composites were deposited onto Indium tin oxide (ITO) substrates by solution processing, and ultraviolet photoelectron spectroscopy (UPS) measurements confirmed that the polyelectrolytes allowed the work function of the substrates to be controlled. In addition, X-ray photoelectron spectroscopy (XPS) results showed that Pb(II)

SUBMITTER: Lee JH 

PROVIDER: S-EPMC7240626 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature