Green-Solvent-Processable Organic Photovoltaics with High Performances Enabled by Asymmetric Non-Fullerene Acceptors.

In this work, two asymmetric non-fullerene acceptors (NFAs), BTP-EHBO-4F and BTP-PHD-4F, are designed to be applied in green-solvent-processable organic photovoltaics (OPVs). BTP-EHBO-4F and BTP-PHD-4F show good solubilities in green solvent -xylene. As a result, PM6:BTP-EHBO-4F-based devices exhibit outstanding photovoltaic performances using -xylene as a solvent.

Vapor-Solid Reaction Growth of Rutile TiO Nanorods and Nanowires for Li-Ion-Battery Electrodes.

A new synthetic method to grow O-deficient rutile TiO nanorods (NRs) and nanowires (NWs) by a vapor-solid reaction growth method is developed. TiCl was employed to react with commercially supplied CaTiO (size 2-4 μm) at 973 K under atmospheric pressure to generate TiO NRs (diameters 80-120 nm, lengths 1-4 μm). The reaction employing TiCl and CaO at 973 K also generated CaTiO (size 4-13 μm) as the intermediate which reacted further with TiCl to produce NWs (diameters 80-120 nm, lengths 4-15 μm).

Enhanced Photocatalysis from Truncated Octahedral Bipyramids of Anatase TiO with Exposed {001}/{101} Facets.

In this study, we develop a new synthetic method to grow anatase TiO crystals composed of truncated octahedral bipyramids (TOBs) with exposed {001} and {101} facets by a vapor-solid reaction growth (VSRG) method. The VSRG method employs TiCl to react with CaO/Ca(OH) at 823-1043 K under atmospheric pressure. The O-deficient pale-blue TOB TiO crystals display high amount of both {001} and {101} facets.