Bottiglieri, Lorenzo; Nourdine, Ali; Resende, Joao; Deschanvres, Jean-Luc; Jimenez, Carmen published their research in Nanomaterials in 2021. The article was titled 《Optimized Stoichiometry for CuCrO2 Thin Films as Hole Transparent Layer in PBDD4T-2F:PC70BM Organic Solar Cells》.Category: copper-catalyst The article contains the following contents:
The performance and stability in atm. conditions of organic photovoltaic devices can be improved by the integration of stable and efficient photoactive materials as substituent of the chem. unstable poly (3,4-ethylene dioxythiophene):polystyrene sulfonate (PEDOT:PSS), generally used as organic hole transport layer. Promising candidates are p-type transparent conductive oxides, which combine good optoelectronic and a higher mech. and chem. stability than the organic counterpart. In this work, we synthesize Cu-rich CuCrO2 thin films by aerosol-assisted chem. vapor deposition as an efficient alternative to PEDOT:PSS. The effect of stoichiometry on the structural, elec., and optical properties was analyzed to find a good compromise between transparency, resistivity, and energy bands alignment, to maximize the photovoltaic performances., Average transmittance and bandgap are reduced when increasing the Cu content in these out of stoichiometry CuCrO2 films. The lowest elec. resistivity is found for samples synthesized from a solution composition in the 60-70% range. The optimal starting solution composition was found at 65% of Cu cationic ratio corresponding to a singular point in Hackee′s figure of merit of 1 x 10-7 Ω -1. PBDD4T-2F:PC70BM organic solar cells were fabricated by integrating CuCrO2 films grown from a solution composition ranging between 40% to 100% of Cu as hole transport layers. The solar cells integrating a film grown with a Cu solution composition of 65% achieved a power conversion efficiency as high as 3.1%, representing the best trade-off of the optoelectronic properties among the studied candidates. Addnl., despite the efficiencies achieved from CuCrO2-based organic solar cells are still inferior to the PEDOT:PSS counterpart, we demonstrated a significant enhancement of the lifetime in atm. conditions of optimal oxides-based organic photovoltaic devices.Bis(acetylacetone)copper(cas: 13395-16-9Category: copper-catalyst) was used in this study.
Bis(acetylacetone)copper(cas: 13395-16-9) catalyzes coupling and carbene transfer reactions. Metal acetylacetonates are used as catalysts for polymerization of olefins and transesterification. Category: copper-catalyst
Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”